77272386 has 16 divisors (see below), whose sum is σ = 155222400. Its totient is φ = 25644528.

The previous prime is 77272379. The next prime is 77272397. The reversal of 77272386 is 68327277.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26746 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (9701400).

Almost surely, 2^77272386 is an apocalyptic number.

77272386 is an abundant number, since it is smaller than the sum of its proper divisors (77950014).

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

77272386 is a wasteful number, since it uses less digits than its factorization.

77272386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56473.

The product of its digits is 197568, while the sum is 42.

The square root of 77272386 is about 8790.4713184220. The cubic root of 77272386 is about 425.9331487153.

The spelling of 77272386 in words is "seventy-seven million, two hundred seventy-two thousand, three hundred eighty-six".