842872788 has 18 divisors (see below), whose sum is σ = 2130595194. Its totient is φ = 280957584.

The previous prime is 842872759. The next prime is 842872831. The reversal of 842872788 is 887278248.

It can be written as a sum of positive squares in only one way, i.e., 842624784 + 248004 = 29028^2 + 498^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11706531 + ... + 11706602.

Almost surely, 2^842872788 is an apocalyptic number.

It is an amenable number.

842872788 is an abundant number, since it is smaller than the sum of its proper divisors (1287722406).

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

842872788 is a wasteful number, since it uses less digits than its factorization.

842872788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23413143 (or 23413138 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 54.

The square root of 842872788 is about 29032.2714922550. The cubic root of 842872788 is about 944.6132019095.

The spelling of 842872788 in words is "eight hundred forty-two million, eight hundred seventy-two thousand, seven hundred eighty-eight".