402013332 has 72 divisors (see below), whose sum is σ = 1198858752. Its totient is φ = 111153600.

The previous prime is 402013319. The next prime is 402013349. The reversal of 402013332 is 233310204.

It is a super-2 number, since 2×402013332² = 323229438211484448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17919 + ... + 33542.

It is an arithmetic number, because the mean of its divisors is an integer number (16650816).

Almost surely, 2^402013332 is an apocalyptic number.

402013332 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

402013332 is an abundant number, since it is smaller than the sum of its proper divisors (796845420).

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

402013332 is a wasteful number, since it uses less digits than its factorization.

402013332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51509 (or 51504 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 402013332 is about 20050.2701228687. The cubic root of 402013332 is about 738.0404278644.

Adding to 402013332 its reverse (233310204), we get a palindrome (635323536).

The spelling of 402013332 in words is "four hundred two million, thirteen thousand, three hundred thirty-two".