102755620 has 36 divisors (see below), whose sum is σ = 237192732. Its totient is φ = 37364800.

The previous prime is 102755557. The next prime is 102755621. The reversal of 102755620 is 26557201.

It can be written as a sum of positive squares in 2 ways, for example, as 80174116 + 22581504 = 8954^2 + 4752^2 .

It is not an unprimeable number, because it can be changed into a prime (102755621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18811 + ... + 23650.

It is an arithmetic number, because the mean of its divisors is an integer number (6588687).

Almost surely, 2^102755620 is an apocalyptic number.

102755620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102755620 is an abundant number, since it is smaller than the sum of its proper divisors (134437112).

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

102755620 is a wasteful number, since it uses less digits than its factorization.

102755620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42492 (or 42479 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 102755620 is about 10136.8446767226. The cubic root of 102755620 is about 468.3837952856.

The spelling of 102755620 in words is "one hundred two million, seven hundred fifty-five thousand, six hundred twenty".