402664024 has 16 divisors (see below), whose sum is σ = 862851600. Its totient is φ = 172570272.

The previous prime is 402664019. The next prime is 402664033. The reversal of 402664024 is 420466204.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 402663983 and 402664001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3595159 + ... + 3595270.

It is an arithmetic number, because the mean of its divisors is an integer number (53928225).

Almost surely, 2^402664024 is an apocalyptic number.

It is an amenable number.

402664024 is an abundant number, since it is smaller than the sum of its proper divisors (460187576).

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

402664024 is a wasteful number, since it uses less digits than its factorization.

402664024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190442 (or 7190438 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 402664024 is about 20066.4900767424. The cubic root of 402664024 is about 738.4384064847.

The spelling of 402664024 in words is "four hundred two million, six hundred sixty-four thousand, twenty-four".