102649190 has 16 divisors (see below), whose sum is σ = 211164192. Its totient is φ = 35193984.

The previous prime is 102649177. The next prime is 102649243. The reversal of 102649190 is 91946201.

It is a super-2 number, since 2×102649190² = 21073712415312200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733139 + ... + 733278.

It is an arithmetic number, because the mean of its divisors is an integer number (13197762).

Almost surely, 2^102649190 is an apocalyptic number.

102649190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102649190 is an abundant number, since it is smaller than the sum of its proper divisors (108515002).

102649190 is a wasteful number, since it uses less digits than its factorization.

102649190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466431.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 102649190 is about 10131.5936554917. The cubic root of 102649190 is about 468.2220286003. Note that the first 3 decimals are identical.

The spelling of 102649190 in words is "one hundred two million, six hundred forty-nine thousand, one hundred ninety".