102745988 has 6 divisors (see below), whose sum is σ = 179805486. Its totient is φ = 51372992.

The previous prime is 102745969. The next prime is 102745999. The reversal of 102745988 is 889547201.

It can be written as a sum of positive squares in only one way, i.e., 73239364 + 29506624 = 8558^2 + 5432^2 .

It is a super-2 number, since 2×102745988² = 21113476100192288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12843245 + ... + 12843252.

It is an arithmetic number, because the mean of its divisors is an integer number (29967581).

Almost surely, 2^102745988 is an apocalyptic number.

It is an amenable number.

102745988 is a deficient number, since it is larger than the sum of its proper divisors (77059498).

102745988 is a wasteful number, since it uses less digits than its factorization.

102745988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25686501 (or 25686499 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 102745988 is about 10136.3695670590. The cubic root of 102745988 is about 468.3691598698.

The spelling of 102745988 in words is "one hundred two million, seven hundred forty-five thousand, nine hundred eighty-eight".