102279620 has 24 divisors (see below), whose sum is σ = 224126784. Its totient is φ = 39132896.

The previous prime is 102279589. The next prime is 102279623. The reversal of 102279620 is 26972201.

It is a super-2 number, since 2×102279620² = 20922241334688800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102279623) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 110714 + ... + 111633.

It is an arithmetic number, because the mean of its divisors is an integer number (9338616).

Almost surely, 2^102279620 is an apocalyptic number.

102279620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102279620 is an abundant number, since it is smaller than the sum of its proper divisors (121847164).

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

102279620 is a wasteful number, since it uses less digits than its factorization.

102279620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222379 (or 222377 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 102279620 is about 10113.3387167641. The cubic root of 102279620 is about 467.6594364066.

The spelling of 102279620 in words is "one hundred two million, two hundred seventy-nine thousand, six hundred twenty".