402649732 has 6 divisors (see below), whose sum is σ = 704637038. Its totient is φ = 201324864.

The previous prime is 402649727. The next prime is 402649739. The reversal of 402649732 is 237946204.

It can be written as a sum of positive squares in only one way, i.e., 253956096 + 148693636 = 15936^2 + 12194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402649691 and 402649700.

It is not an unprimeable number, because it can be changed into a prime (402649739) 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 as a sum of consecutive naturals, namely, 50331213 + ... + 50331220.

Almost surely, 2^402649732 is an apocalyptic number.

It is an amenable number.

402649732 is a deficient number, since it is larger than the sum of its proper divisors (301987306).

402649732 is a wasteful number, since it uses less digits than its factorization.

402649732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100662437 (or 100662435 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 402649732 is about 20066.1339574917. The cubic root of 402649732 is about 738.4296697663.

The spelling of 402649732 in words is "four hundred two million, six hundred forty-nine thousand, seven hundred thirty-two".