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1408017852 = 223239111607
BaseRepresentation
bin101001111101100…
…1010010110111100
310122010102201101100
41103323022112330
510340423032402
6351414413100
746614645213
oct12373122674
93563381340
101408017852
1166287571a
12333661190
13195928077
14d4ddc07a
158392a71c
hex53eca5bc

1408017852 has 18 divisors (see below), whose sum is σ = 3559156328. Its totient is φ = 469339272.

The previous prime is 1408017851. The next prime is 1408017881. The reversal of 1408017852 is 2587108041.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 39111607 = 1408017852 / (1 + 4 + 0 + 8 + 0 + 1 + 7 + 8 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408017851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19555768 + ... + 19555839.

Almost surely, 21408017852 is an apocalyptic number.

1408017852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1408017852 is an abundant number, since it is smaller than the sum of its proper divisors (2151138476).

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

1408017852 is a wasteful number, since it uses less digits than its factorization.

1408017852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39111617 (or 39111612 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 1408017852 is about 37523.5639565327. The cubic root of 1408017852 is about 1120.8204691745.

The spelling of 1408017852 in words is "one billion, four hundred eight million, seventeen thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 39111607 78223214 117334821 156446428 234669642 352004463 469339284 704008926 1408017852