202639012 has 6 divisors (see below), whose sum is σ = 354618278. Its totient is φ = 101319504.

The previous prime is 202639001. The next prime is 202639013. The reversal of 202639012 is 210936202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 184796836 + 17842176 = 13594^2 + 4224^2 .

It is a super-2 number, since 2×202639012² = 82125138368672288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202639013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25329873 + ... + 25329880.

Almost surely, 2^202639012 is an apocalyptic number.

It is an amenable number.

202639012 is a deficient number, since it is larger than the sum of its proper divisors (151979266).

202639012 is a wasteful number, since it uses less digits than its factorization.

202639012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50659757 (or 50659755 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 202639012 is about 14235.1330165896. The cubic root of 202639012 is about 587.3644891624.

The spelling of 202639012 in words is "two hundred two million, six hundred thirty-nine thousand, twelve".