107921830 has 32 divisors (see below), whose sum is σ = 199584000. Its totient is φ = 41993952.

The previous prime is 107921783. The next prime is 107921837. The reversal of 107921830 is 38129701.

It is a junction number, because it is equal to n+sod(n) for n = 107921792 and 107921801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107921837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179871 + ... + 180469.

It is an arithmetic number, because the mean of its divisors is an integer number (6237000).

Almost surely, 2^107921830 is an apocalyptic number.

107921830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

107921830 is a deficient number, since it is larger than the sum of its proper divisors (91662170).

107921830 is a wasteful number, since it uses less digits than its factorization.

107921830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 107921830 is about 10388.5432087468. The cubic root of 107921830 is about 476.1053923588.

The spelling of 107921830 in words is "one hundred seven million, nine hundred twenty-one thousand, eight hundred thirty".