107172978 has 16 divisors (see below), whose sum is σ = 233832096. Its totient is φ = 32476640.

The previous prime is 107172973. The next prime is 107172991. The reversal of 107172978 is 879271701.

It is a super-2 number, since 2×107172978² = 22972094426776968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (107172973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811851 + ... + 811982.

It is an arithmetic number, because the mean of its divisors is an integer number (14614506).

Almost surely, 2^107172978 is an apocalyptic number.

107172978 is an abundant number, since it is smaller than the sum of its proper divisors (126659118).

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

107172978 is a wasteful number, since it uses less digits than its factorization.

107172978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623849.

The product of its (nonzero) digits is 49392, while the sum is 42.

The square root of 107172978 is about 10352.4382635203. The cubic root of 107172978 is about 475.0016295420.

It can be divided in two parts, 10717 and 2978, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 107172978 in words is "one hundred seven million, one hundred seventy-two thousand, nine hundred seventy-eight".