78941656 has 16 divisors (see below), whose sum is σ = 155806200. Its totient is φ = 37393344.

The previous prime is 78941651. The next prime is 78941657. The reversal of 78941656 is 65614987.

78941656 = T₇₂₅₃ + T₇₂₅₄ + T₇₂₅₅.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78941651) 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 3 ways as a sum of consecutive naturals, for example, 259525 + ... + 259828.

Almost surely, 2^78941656 is an apocalyptic number.

78941656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

78941656 is the 7255-th centered triangular number.

It is an amenable number.

78941656 is a deficient number, since it is larger than the sum of its proper divisors (76864544).

78941656 is a wasteful number, since it uses less digits than its factorization.

78941656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519378 (or 519374 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 78941656 is about 8884.9117046823. The cubic root of 78941656 is about 428.9783859734.

It can be divided in two parts, 78941 and 656, that added together give a palindrome (79597).

The spelling of 78941656 in words is "seventy-eight million, nine hundred forty-one thousand, six hundred fifty-six".