78281883 has 20 divisors (see below), whose sum is σ = 117298368. Its totient is φ = 52027920.

The previous prime is 78281869. The next prime is 78281909. The reversal of 78281883 is 38818287.

It is a happy number.

It is not a de Polignac number, because 78281883 - 2¹³ = 78273691 is a prime.

It is a super-2 number, since 2×78281883² = 12256106412051378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78281183) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28918 + ... + 31508.

Almost surely, 2^78281883 is an apocalyptic number.

78281883 is a deficient number, since it is larger than the sum of its proper divisors (39016485).

78281883 is a wasteful number, since it uses less digits than its factorization.

78281883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976 (or 2967 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 78281883 is about 8847.7049566540. The cubic root of 78281883 is about 427.7799459096.

It can be divided in two parts, 78 and 281883, that added together give a square (281961 = 531²).

The spelling of 78281883 in words is "seventy-eight million, two hundred eighty-one thousand, eight hundred eighty-three".