402251340 has 48 divisors (see below), whose sum is σ = 1131056640. Its totient is φ = 106814400.

The previous prime is 402251293. The next prime is 402251341. The reversal of 402251340 is 43152204.

It is a super-2 number, since 2×402251340² = 323612281063591200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402251341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315 + ... + 28365.

It is an arithmetic number, because the mean of its divisors is an integer number (23563680).

Almost surely, 2^402251340 is an apocalyptic number.

It is an amenable number.

402251340 is an abundant number, since it is smaller than the sum of its proper divisors (728805300).

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

402251340 is a wasteful number, since it uses less digits than its factorization.

402251340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28302 (or 28300 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402251340 is about 20056.2045262806. The cubic root of 402251340 is about 738.1860489651.

The spelling of 402251340 in words is "four hundred two million, two hundred fifty-one thousand, three hundred forty".