891576136 has 16 divisors (see below), whose sum is σ = 1823678640. Its totient is φ = 405261840.

The previous prime is 891576113. The next prime is 891576139. The reversal of 891576136 is 631675198.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (891576139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5065686 + ... + 5065861.

It is an arithmetic number, because the mean of its divisors is an integer number (113979915).

Almost surely, 2^891576136 is an apocalyptic number.

It is an amenable number.

891576136 is an abundant number, since it is smaller than the sum of its proper divisors (932102504).

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

891576136 is a wasteful number, since it uses less digits than its factorization.

891576136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131564 (or 10131560 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 891576136 is about 29859.2721947471. The cubic root of 891576136 is about 962.4676590246.

The spelling of 891576136 in words is "eight hundred ninety-one million, five hundred seventy-six thousand, one hundred thirty-six".