402968928 has 48 divisors (see below), whose sum is σ = 1075149936. Its totient is φ = 132119040.

The previous prime is 402968927. The next prime is 402968933. The reversal of 402968928 is 829869204.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402968921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28551 + ... + 40262.

It is an arithmetic number, because the mean of its divisors is an integer number (22398957).

Almost surely, 2^402968928 is an apocalyptic number.

402968928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

402968928 is an abundant number, since it is smaller than the sum of its proper divisors (672181008).

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

402968928 is a wasteful number, since it uses less digits than its factorization.

402968928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68887 (or 68879 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 402968928 is about 20074.0859816830. The cubic root of 402968928 is about 738.6247454708.

The spelling of 402968928 in words is "four hundred two million, nine hundred sixty-eight thousand, nine hundred twenty-eight".