102649972 has 24 divisors (see below), whose sum is σ = 182750400. Its totient is φ = 50440896.

The previous prime is 102649949. The next prime is 102649979. The reversal of 102649972 is 279946201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102649979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121929 + ... + 122767.

It is an arithmetic number, because the mean of its divisors is an integer number (7614600).

Almost surely, 2^102649972 is an apocalyptic number.

It is an amenable number.

102649972 is a deficient number, since it is larger than the sum of its proper divisors (80100428).

102649972 is a wasteful number, since it uses less digits than its factorization.

102649972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1333 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 102649972 is about 10131.6322475700. The cubic root of 102649972 is about 468.2232175972.

The spelling of 102649972 in words is "one hundred two million, six hundred forty-nine thousand, nine hundred seventy-two".