77272546 has 12 divisors (see below), whose sum is σ = 125511282. Its totient is φ = 35664096.

The previous prime is 77272541. The next prime is 77272549. The reversal of 77272546 is 64527277.

It can be written as a sum of positive squares in 3 ways, for example, as 32046921 + 45225625 = 5661^2 + 6725^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77272499 and 77272508.

It is not an unprimeable number, because it can be changed into a prime (77272541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113971 + ... + 114646.

Almost surely, 2^77272546 is an apocalyptic number.

77272546 is a deficient number, since it is larger than the sum of its proper divisors (48238736).

77272546 is a wasteful number, since it uses less digits than its factorization.

77272546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228645 (or 228632 counting only the distinct ones).

The product of its digits is 164640, while the sum is 40.

The square root of 77272546 is about 8790.4804191807. The cubic root of 77272546 is about 425.9334426938.

The spelling of 77272546 in words is "seventy-seven million, two hundred seventy-two thousand, five hundred forty-six".