102978190 has 16 divisors (see below), whose sum is σ = 211840992. Its totient is φ = 35306784.

The previous prime is 102978181. The next prime is 102978203. The reversal of 102978190 is 91879201.

It is a super-2 number, since 2×102978190² = 21209015231352200, 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, 735489 + ... + 735628.

It is an arithmetic number, because the mean of its divisors is an integer number (13240062).

Almost surely, 2^102978190 is an apocalyptic number.

102978190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102978190 is an abundant number, since it is smaller than the sum of its proper divisors (108862802).

102978190 is a wasteful number, since it uses less digits than its factorization.

102978190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471131.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 102978190 is about 10147.8170066276. The cubic root of 102978190 is about 468.7217265317.

The spelling of 102978190 in words is "one hundred two million, nine hundred seventy-eight thousand, one hundred ninety".