102621264 has 20 divisors (see below), whose sum is σ = 265105056. Its totient is φ = 34207072.

The previous prime is 102621251. The next prime is 102621271. The reversal of 102621264 is 462126201.

It is a super-2 number, since 2×102621264² = 21062247649915392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1068924 + ... + 1069019.

Almost surely, 2^102621264 is an apocalyptic number.

It is an amenable number.

102621264 is an abundant number, since it is smaller than the sum of its proper divisors (162483792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102621264 is a wasteful number, since it uses less digits than its factorization.

102621264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137954 (or 2137948 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 102621264 is about 10130.2153975125. The cubic root of 102621264 is about 468.1795643773.

Adding to 102621264 its reverse (462126201), we get a palindrome (564747465).

The spelling of 102621264 in words is "one hundred two million, six hundred twenty-one thousand, two hundred sixty-four".