428791038 has 32 divisors (see below), whose sum is σ = 946082592. Its totient is φ = 128716800.

The previous prime is 428791019. The next prime is 428791057. The reversal of 428791038 is 830197824.

It is an interprime number because it is at equal distance from previous prime (428791019) and next prime (428791057).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63843 + ... + 70238.

It is an arithmetic number, because the mean of its divisors is an integer number (29565081).

Almost surely, 2^428791038 is an apocalyptic number.

428791038 is an abundant number, since it is smaller than the sum of its proper divisors (517291554).

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

428791038 is a wasteful number, since it uses less digits than its factorization.

428791038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134140.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 428791038 is about 20707.2701725747. The cubic root of 428791038 is about 754.0761988908.

The spelling of 428791038 in words is "four hundred twenty-eight million, seven hundred ninety-one thousand, thirty-eight".