402622920 has 256 divisors, whose sum is σ = 1615104000. Its totient is φ = 87153408.

The previous prime is 402622907. The next prime is 402622963. The reversal of 402622920 is 29226204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142239 + ... + 145041.

It is an arithmetic number, because the mean of its divisors is an integer number (6309000).

Almost surely, 2^402622920 is an apocalyptic number.

402622920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402622920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807552000).

402622920 is an abundant number, since it is smaller than the sum of its proper divisors (1212481080).

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

402622920 is a wasteful number, since it uses less digits than its factorization.

402622920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2839 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 402622920 is about 20065.4658555439. The cubic root of 402622920 is about 738.4132789977.

The spelling of 402622920 in words is "four hundred two million, six hundred twenty-two thousand, nine hundred twenty".