657141828 has 48 divisors (see below), whose sum is σ = 1844613120. Its totient is φ = 177872544.

The previous prime is 657141787. The next prime is 657141833. The reversal of 657141828 is 828141756.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 657141828.

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, 204276 + ... + 207467.

It is an arithmetic number, because the mean of its divisors is an integer number (38429440).

Almost surely, 2^657141828 is an apocalyptic number.

It is an amenable number.

657141828 is an abundant number, since it is smaller than the sum of its proper divisors (1187471292).

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

657141828 is a wasteful number, since it uses less digits than its factorization.

657141828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411776 (or 411774 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 657141828 is about 25634.7777052972. Note that the first 4 decimals coincide. The cubic root of 657141828 is about 869.4001360999.

The spelling of 657141828 in words is "six hundred fifty-seven million, one hundred forty-one thousand, eight hundred twenty-eight".