402250520 has 64 divisors (see below), whose sum is σ = 1088812800. Its totient is φ = 130654080.

The previous prime is 402250483. The next prime is 402250523. The reversal of 402250520 is 25052204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 402250492 and 402250501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402250523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32486 + ... + 43125.

It is an arithmetic number, because the mean of its divisors is an integer number (17012700).

Almost surely, 2^402250520 is an apocalyptic number.

402250520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402250520 is an abundant number, since it is smaller than the sum of its proper divisors (686562280).

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

402250520 is a wasteful number, since it uses less digits than its factorization.

402250520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75648 (or 75644 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 402250520 is about 20056.1840837184. The cubic root of 402250520 is about 738.1855473609.

The spelling of 402250520 in words is "four hundred two million, two hundred fifty thousand, five hundred twenty".