78043772 has 24 divisors (see below), whose sum is σ = 139615056. Its totient is φ = 38158848.

The previous prime is 78043751. The next prime is 78043813. The reversal of 78043772 is 27734087.

It is a pancake number, because a pancake can be divided into 78043772 parts by 12493 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115628 + ... + 116300.

It is an arithmetic number, because the mean of its divisors is an integer number (5817294).

Almost surely, 2^78043772 is an apocalyptic number.

It is an amenable number.

78043772 is a deficient number, since it is larger than the sum of its proper divisors (61571284).

78043772 is a wasteful number, since it uses less digits than its factorization.

78043772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 78043772 is about 8834.2386202774. The cubic root of 78043772 is about 427.3457775041.

The spelling of 78043772 in words is "seventy-eight million, forty-three thousand, seven hundred seventy-two".