102152644 has 24 divisors (see below), whose sum is σ = 195350400. Its totient is φ = 46354080.

The previous prime is 102152641. The next prime is 102152647. The reversal of 102152644 is 446251201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102152641) and next prime (102152647).

It is not an unprimeable number, because it can be changed into a prime (102152641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30022 + ... + 33250.

It is an arithmetic number, because the mean of its divisors is an integer number (8139600).

Almost surely, 2^102152644 is an apocalyptic number.

It is an amenable number.

102152644 is a deficient number, since it is larger than the sum of its proper divisors (93197756).

102152644 is a wasteful number, since it uses less digits than its factorization.

102152644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963 (or 3961 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 102152644 is about 10107.0591172705. The cubic root of 102152644 is about 467.4658295251.

The spelling of 102152644 in words is "one hundred two million, one hundred fifty-two thousand, six hundred forty-four".