891925428 has 24 divisors (see below), whose sum is σ = 2148294400. Its totient is φ = 287717760.

The previous prime is 891925399. The next prime is 891925477. The reversal of 891925428 is 824529198.

It is a super-2 number, since 2×891925428² = 1591061938225966368, which contains 22 as substring.

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, 1198453 + ... + 1199196.

Almost surely, 2^891925428 is an apocalyptic number.

It is an amenable number.

891925428 is an abundant number, since it is smaller than the sum of its proper divisors (1256368972).

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

891925428 is a wasteful number, since it uses less digits than its factorization.

891925428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397687 (or 2397685 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 891925428 is about 29865.1205924235. The cubic root of 891925428 is about 962.5933309845.

The spelling of 891925428 in words is "eight hundred ninety-one million, nine hundred twenty-five thousand, four hundred twenty-eight".