78107472 has 60 divisors (see below), whose sum is σ = 219232000. Its totient is φ = 25959744.

The previous prime is 78107443. The next prime is 78107483. The reversal of 78107472 is 27470187.

It is a super-2 number, since 2×78107472² = 12201554364461568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 71313 + ... + 72399.

Almost surely, 2^78107472 is an apocalyptic number.

78107472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78107472 is an abundant number, since it is smaller than the sum of its proper divisors (141124528).

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

78107472 is a wasteful number, since it uses less digits than its factorization.

78107472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 78107472 is about 8837.8431757980. The cubic root of 78107472 is about 427.4620136556.

The spelling of 78107472 in words is "seventy-eight million, one hundred seven thousand, four hundred seventy-two".