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4780045 = 53130839
BaseRepresentation
bin10010001111000000001101
322222211222201
4102033000031
52210430140
6250241501
755425664
oct22170015
98884881
104780045
112775356
121726291
13cb493a
148c5ddb
1564649a
hex48f00d

4780045 has 8 divisors (see below), whose sum is σ = 5921280. Its totient is φ = 3700560.

The previous prime is 4780037. The next prime is 4780051. The reversal of 4780045 is 5400874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4780045 - 23 = 4780037 is a prime.

It is an Ulam number.

4780045 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4779995 and 4780022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15265 + ... + 15574.

It is an arithmetic number, because the mean of its divisors is an integer number (740160).

Almost surely, 24780045 is an apocalyptic number.

It is an amenable number.

4780045 is a deficient number, since it is larger than the sum of its proper divisors (1141235).

4780045 is a wasteful number, since it uses less digits than its factorization.

4780045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30875.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4780045 is about 2186.3314021438. The cubic root of 4780045 is about 168.4524486683.

The spelling of 4780045 in words is "four million, seven hundred eighty thousand, forty-five".

Divisors: 1 5 31 155 30839 154195 956009 4780045