78275544 has 16 divisors (see below), whose sum is σ = 195688920. Its totient is φ = 26091840.

The previous prime is 78275543. The next prime is 78275551. The reversal of 78275544 is 44557287.

It is a super-2 number, since 2×78275544² = 12254121576991872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78275496 and 78275505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78275543) 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, 1630717 + ... + 1630764.

Almost surely, 2^78275544 is an apocalyptic number.

It is an amenable number.

78275544 is an abundant number, since it is smaller than the sum of its proper divisors (117413376).

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

78275544 is a wasteful number, since it uses less digits than its factorization.

78275544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261490 (or 3261486 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 78275544 is about 8847.3467209102. The cubic root of 78275544 is about 427.7683988773.

The spelling of 78275544 in words is "seventy-eight million, two hundred seventy-five thousand, five hundred forty-four".