63129890 has 32 divisors (see below), whose sum is σ = 116453376. Its totient is φ = 24631360.

The previous prime is 63129887. The next prime is 63129901. The reversal of 63129890 is 9892136.

It is a super-2 number, since 2×63129890² = 7970766022824200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164639 + ... + 165021.

It is an arithmetic number, because the mean of its divisors is an integer number (3639168).

Almost surely, 2^63129890 is an apocalyptic number.

63129890 is a deficient number, since it is larger than the sum of its proper divisors (53323486).

63129890 is a wasteful number, since it uses less digits than its factorization.

63129890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 63129890 is about 7945.4320209791. The cubic root of 63129890 is about 398.1789932497.

The spelling of 63129890 in words is "sixty-three million, one hundred twenty-nine thousand, eight hundred ninety".