102052690 has 16 divisors (see below), whose sum is σ = 188175960. Its totient is φ = 39825280.

The previous prime is 102052681. The next prime is 102052693. The reversal of 102052690 is 96250201.

It can be written as a sum of positive squares in 4 ways, for example, as 40947201 + 61105489 = 6399^2 + 7817^2 .

It is a super-2 number, since 2×102052690² = 20829503072472200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102052693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124045 + ... + 124864.

Almost surely, 2^102052690 is an apocalyptic number.

102052690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102052690 is a deficient number, since it is larger than the sum of its proper divisors (86123270).

102052690 is a wasteful number, since it uses less digits than its factorization.

102052690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248957.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 102052690 is about 10102.1131452781. The cubic root of 102052690 is about 467.3133116010.

The spelling of 102052690 in words is "one hundred two million, fifty-two thousand, six hundred ninety".