77115448 has 16 divisors (see below), whose sum is σ = 146573280. Its totient is φ = 38029248.

The previous prime is 77115439. The next prime is 77115457. The reversal of 77115448 is 84451177.

It is an interprime number because it is at equal distance from previous prime (77115439) and next prime (77115457).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65440 + ... + 66607.

It is an arithmetic number, because the mean of its divisors is an integer number (9160830).

Almost surely, 2^77115448 is an apocalyptic number.

It is an amenable number.

77115448 is a deficient number, since it is larger than the sum of its proper divisors (69457832).

77115448 is a wasteful number, since it uses less digits than its factorization.

77115448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132126 (or 132122 counting only the distinct ones).

The product of its digits is 31360, while the sum is 37.

The square root of 77115448 is about 8781.5401838174. The cubic root of 77115448 is about 425.6446006126.

The spelling of 77115448 in words is "seventy-seven million, one hundred fifteen thousand, four hundred forty-eight".