78235572 has 24 divisors (see below), whose sum is σ = 182974176. Its totient is φ = 26017888.

The previous prime is 78235567. The next prime is 78235583. The reversal of 78235572 is 27553287.

It is a super-2 number, since 2×78235572² = 12241609452334368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78235572.

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, 2043 + ... + 12674.

It is an arithmetic number, because the mean of its divisors is an integer number (7623924).

Almost surely, 2^78235572 is an apocalyptic number.

It is an amenable number.

78235572 is an abundant number, since it is smaller than the sum of its proper divisors (104738604).

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

78235572 is a wasteful number, since it uses less digits than its factorization.

78235572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15167 (or 15165 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

The square root of 78235572 is about 8845.0874501047. The cubic root of 78235572 is about 427.6955720874.

The spelling of 78235572 in words is "seventy-eight million, two hundred thirty-five thousand, five hundred seventy-two".