102015690 has 64 divisors (see below), whose sum is σ = 280627200. Its totient is φ = 23250240.

The previous prime is 102015689. The next prime is 102015701. The reversal of 102015690 is 96510201.

It is a super-2 number, since 2×102015690² = 20814402012352200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102015690.

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 31 ways as a sum of consecutive naturals, for example, 125385 + ... + 126195.

It is an arithmetic number, because the mean of its divisors is an integer number (4384800).

Almost surely, 2^102015690 is an apocalyptic number.

102015690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102015690 is an abundant number, since it is smaller than the sum of its proper divisors (178611510).

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

102015690 is a wasteful number, since it uses less digits than its factorization.

102015690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 102015690 is about 10100.2816792404. The cubic root of 102015690 is about 467.2568287438.

Adding to 102015690 its reverse (96510201), we get a palindrome (198525891).

The spelling of 102015690 in words is "one hundred two million, fifteen thousand, six hundred ninety".