106521980 has 24 divisors (see below), whose sum is σ = 235470480. Its totient is φ = 40366080.

The previous prime is 106521953. The next prime is 106522019. The reversal of 106521980 is 89125601.

It is a super-2 number, since 2×106521980² = 22693864446240800, 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, 139781 + ... + 140540.

It is an arithmetic number, because the mean of its divisors is an integer number (9811270).

Almost surely, 2^106521980 is an apocalyptic number.

106521980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

106521980 is an abundant number, since it is smaller than the sum of its proper divisors (128948500).

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

106521980 is a wasteful number, since it uses less digits than its factorization.

106521980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280349 (or 280347 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 106521980 is about 10320.9485998139. The cubic root of 106521980 is about 474.0379123064.

The spelling of 106521980 in words is "one hundred six million, five hundred twenty-one thousand, nine hundred eighty".