65438402 has 4 divisors (see below), whose sum is σ = 98157606. Its totient is φ = 32719200.

The previous prime is 65438393. The next prime is 65438447. The reversal of 65438402 is 20483456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51681721 + 13756681 = 7189^2 + 3709^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16359599 + ... + 16359602.

Almost surely, 2^65438402 is an apocalyptic number.

65438402 is a deficient number, since it is larger than the sum of its proper divisors (32719204).

65438402 is a wasteful number, since it uses less digits than its factorization.

65438402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32719203.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 65438402 is about 8089.4005958414. The cubic root of 65438402 is about 402.9744969258.

The spelling of 65438402 in words is "sixty-five million, four hundred thirty-eight thousand, four hundred two".