78282572 has 12 divisors (see below), whose sum is σ = 138871656. Its totient is φ = 38604960.

The previous prime is 78282559. The next prime is 78282577. The reversal of 78282572 is 27528287.

It is a happy number.

It is a super-2 number, since 2×78282572² = 12256322157870368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78282577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133754 + ... + 134337.

It is an arithmetic number, because the mean of its divisors is an integer number (11572638).

Almost surely, 2^78282572 is an apocalyptic number.

It is an amenable number.

78282572 is a deficient number, since it is larger than the sum of its proper divisors (60589084).

78282572 is a wasteful number, since it uses less digits than its factorization.

78282572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268168 (or 268166 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 78282572 is about 8847.7438932193. The cubic root of 78282572 is about 427.7812009446.

The spelling of 78282572 in words is "seventy-eight million, two hundred eighty-two thousand, five hundred seventy-two".