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74708472 = 23317712579
BaseRepresentation
bin1000111001111…
…11010111111000
312012120120202110
410130333113320
5123111132342
611225132320
71565003646
oct434772770
9165516673
1074708472
1139197643
122102a0a0
13126299c7
149cca196
15685ac9c
hex473f5f8

74708472 has 64 divisors (see below), whose sum is σ = 200620800. Its totient is φ = 23098880.

The previous prime is 74708471. The next prime is 74708477. The reversal of 74708472 is 27480747.

It is a self number, because there is not a number n which added to its sum of digits gives 74708472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74708471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27679 + ... + 30257.

It is an arithmetic number, because the mean of its divisors is an integer number (3134700).

Almost surely, 274708472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74708472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100310400).

74708472 is an abundant number, since it is smaller than the sum of its proper divisors (125912328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74708472 is a wasteful number, since it uses less digits than its factorization.

74708472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676 (or 2672 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 74708472 is about 8643.4062729921. The cubic root of 74708472 is about 421.1692137284.

The spelling of 74708472 in words is "seventy-four million, seven hundred eight thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 71 102 136 142 204 213 284 408 426 568 852 1207 1704 2414 2579 3621 4828 5158 7242 7737 9656 10316 14484 15474 20632 28968 30948 43843 61896 87686 131529 175372 183109 263058 350744 366218 526116 549327 732436 1052232 1098654 1464872 2197308 3112853 4394616 6225706 9338559 12451412 18677118 24902824 37354236 74708472