77242848 has 24 divisors (see below), whose sum is σ = 202762728. Its totient is φ = 25747584.

The previous prime is 77242843. The next prime is 77242861. The reversal of 77242848 is 84824277.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×77242848² = 11932915134302208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77242843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 402211 + ... + 402402.

It is an arithmetic number, because the mean of its divisors is an integer number (8448447).

Almost surely, 2^77242848 is an apocalyptic number.

It is an amenable number.

77242848 is an abundant number, since it is smaller than the sum of its proper divisors (125519880).

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

77242848 is a wasteful number, since it uses less digits than its factorization.

77242848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804626 (or 804618 counting only the distinct ones).

The product of its digits is 200704, while the sum is 42.

The square root of 77242848 is about 8788.7910431413. The cubic root of 77242848 is about 425.8788696581.

The spelling of 77242848 in words is "seventy-seven million, two hundred forty-two thousand, eight hundred forty-eight".