77246040 has 64 divisors (see below), whose sum is σ = 232696800. Its totient is φ = 20513792.

The previous prime is 77246033. The next prime is 77246063. The reversal of 77246040 is 4064277.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 77245989 and 77246007.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 31084 + ... + 33476.

Almost surely, 2^77246040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77246040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116348400).

77246040 is an abundant number, since it is smaller than the sum of its proper divisors (155450760).

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

77246040 is a wasteful number, since it uses less digits than its factorization.

77246040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676 (or 2672 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 77246040 is about 8788.9726362073. The cubic root of 77246040 is about 425.8847359472.

The spelling of 77246040 in words is "seventy-seven million, two hundred forty-six thousand, forty".