402284072788 has 48 divisors (see below), whose sum is σ = 760633068160. Its totient is φ = 185062610304.

The previous prime is 402284072747. The next prime is 402284072789. The reversal of 402284072788 is 887270482204.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402284072789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21744070 + ... + 21762562.

Almost surely, 2^402284072788 is an apocalyptic number.

It is an amenable number.

402284072788 is a deficient number, since it is larger than the sum of its proper divisors (358348995372).

402284072788 is a wasteful number, since it uses less digits than its factorization.

402284072788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856 (or 19854 counting only the distinct ones).

The product of its (nonzero) digits is 3211264, while the sum is 52.

The spelling of 402284072788 in words is "four hundred two billion, two hundred eighty-four million, seventy-two thousand, seven hundred eighty-eight".