402868436 has 12 divisors (see below), whose sum is σ = 727762560. Its totient is φ = 194936280.

The previous prime is 402868429. The next prime is 402868439. The reversal of 402868436 is 634868204.

It is a junction number, because it is equal to n+sod(n) for n = 402868393 and 402868402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402868439) 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, 1624346 + ... + 1624593.

It is an arithmetic number, because the mean of its divisors is an integer number (60646880).

Almost surely, 2^402868436 is an apocalyptic number.

It is an amenable number.

402868436 is a deficient number, since it is larger than the sum of its proper divisors (324894124).

402868436 is a wasteful number, since it uses less digits than its factorization.

402868436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248974 (or 3248972 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 402868436 is about 20071.5827975773. The cubic root of 402868436 is about 738.5633411923.

It can be divided in two parts, 402868 and 436, that added together give a palindrome (403304).

The spelling of 402868436 in words is "four hundred two million, eight hundred sixty-eight thousand, four hundred thirty-six".