78244476 has 48 divisors (see below), whose sum is σ = 186485376. Its totient is φ = 25527744.

The previous prime is 78244471. The next prime is 78244493. The reversal of 78244476 is 67444287.

It is a super-2 number, since 2×78244476² = 12244396049029152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78244471) 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, 246670 + ... + 246986.

It is an arithmetic number, because the mean of its divisors is an integer number (3885112).

Almost surely, 2^78244476 is an apocalyptic number.

It is an amenable number.

78244476 is an abundant number, since it is smaller than the sum of its proper divisors (108240900).

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

78244476 is a wasteful number, since it uses less digits than its factorization.

78244476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 696 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The square root of 78244476 is about 8845.5907660257. The cubic root of 78244476 is about 427.7117968337.

The spelling of 78244476 in words is "seventy-eight million, two hundred forty-four thousand, four hundred seventy-six".