402148972 has 12 divisors (see below), whose sum is σ = 707446656. Its totient is φ = 200021360.

The previous prime is 402148949. The next prime is 402148993. The reversal of 402148972 is 279841204.

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 3 ways as a sum of consecutive naturals, for example, 262423 + ... + 263950.

It is an arithmetic number, because the mean of its divisors is an integer number (58953888).

Almost surely, 2^402148972 is an apocalyptic number.

It is an amenable number.

402148972 is a deficient number, since it is larger than the sum of its proper divisors (305297684).

402148972 is a wasteful number, since it uses less digits than its factorization.

402148972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526568 (or 526566 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 402148972 is about 20053.6523356719. The cubic root of 402148972 is about 738.1234239070.

The spelling of 402148972 in words is "four hundred two million, one hundred forty-eight thousand, nine hundred seventy-two".