113921428 has 12 divisors (see below), whose sum is σ = 199452960. Its totient is φ = 56934872.

The previous prime is 113921407. The next prime is 113921441. The reversal of 113921428 is 824129311.

It is a self number, because there is not a number n which added to its sum of digits gives 113921428.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6225 + ... + 16327.

It is an arithmetic number, because the mean of its divisors is an integer number (16621080).

Almost surely, 2^113921428 is an apocalyptic number.

It is an amenable number.

113921428 is a deficient number, since it is larger than the sum of its proper divisors (85531532).

113921428 is a wasteful number, since it uses less digits than its factorization.

113921428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12926 (or 12924 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 113921428 is about 10673.3981467947. The cubic root of 113921428 is about 484.7693351715.

The spelling of 113921428 in words is "one hundred thirteen million, nine hundred twenty-one thousand, four hundred twenty-eight".