102986990 has 16 divisors (see below), whose sum is σ = 186258960. Its totient is φ = 40998720.

The previous prime is 102986941. The next prime is 102987029. The reversal of 102986990 is 99689201.

It is a Curzon number.

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, 22295 + ... + 26514.

It is an arithmetic number, because the mean of its divisors is an integer number (11641185).

Almost surely, 2^102986990 is an apocalyptic number.

102986990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102986990 is a deficient number, since it is larger than the sum of its proper divisors (83271970).

102986990 is a wasteful number, since it uses less digits than its factorization.

102986990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49027.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 102986990 is about 10148.2505881556. The cubic root of 102986990 is about 468.7350776879.

The spelling of 102986990 in words is "one hundred two million, nine hundred eighty-six thousand, nine hundred ninety".