78312883 has 16 divisors (see below), whose sum is σ = 88225920. Its totient is φ = 68904000.

The previous prime is 78312881. The next prime is 78312901. The reversal of 78312883 is 38821387.

It is not a de Polignac number, because 78312883 - 2¹ = 78312881 is a prime.

It is a super-2 number, since 2×78312883² = 12265815287543378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78312881) 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, 42583 + ... + 44383.

It is an arithmetic number, because the mean of its divisors is an integer number (5514120).

Almost surely, 2^78312883 is an apocalyptic number.

78312883 is a deficient number, since it is larger than the sum of its proper divisors (9913037).

78312883 is a wasteful number, since it uses less digits than its factorization.

78312883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938.

The product of its digits is 64512, while the sum is 40.

The square root of 78312883 is about 8849.4566499870. The cubic root of 78312883 is about 427.8364060921.

The spelling of 78312883 in words is "seventy-eight million, three hundred twelve thousand, eight hundred eighty-three".