77972283 has 24 divisors (see below), whose sum is σ = 118512576. Its totient is φ = 49334400.

The previous prime is 77972269. The next prime is 77972309. The reversal of 77972283 is 38227977.

It is not a de Polignac number, because 77972283 - 2⁴ = 77972267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77972203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10798 + ... + 16508.

It is an arithmetic number, because the mean of its divisors is an integer number (4938024).

Almost surely, 2^77972283 is an apocalyptic number.

77972283 is a deficient number, since it is larger than the sum of its proper divisors (40540293).

77972283 is a wasteful number, since it uses less digits than its factorization.

77972283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795 (or 5792 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 77972283 is about 8830.1915607760. The cubic root of 77972283 is about 427.2152530797.

The spelling of 77972283 in words is "seventy-seven million, nine hundred seventy-two thousand, two hundred eighty-three".