402920 has 32 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 138048.

The previous prime is 402881. The next prime is 402923. The reversal of 402920 is 29204.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402920.

It is not an unprimeable number, because it can be changed into a prime (402923) 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, 440 + ... + 999.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2⁴⁰²⁹²⁰ is an apocalyptic number.

402920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402920 is an abundant number, since it is smaller than the sum of its proper divisors (633880).

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

402920 is a wasteful number, since it uses less digits than its factorization.

402920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 402920 is about 634.7597970886. The cubic root of 402920 is about 73.8594849953.

The spelling of 402920 in words is "four hundred two thousand, nine hundred twenty".