77072124 has 12 divisors (see below), whose sum is σ = 179834984. Its totient is φ = 25690704.

The previous prime is 77072081. The next prime is 77072137. The reversal of 77072124 is 42127077.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×77072124² = 11880224595742752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77072091 and 77072100.

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, 3211327 + ... + 3211350.

Almost surely, 2^77072124 is an apocalyptic number.

It is an amenable number.

77072124 is an abundant number, since it is smaller than the sum of its proper divisors (102762860).

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

77072124 is a wasteful number, since it uses less digits than its factorization.

77072124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422684 (or 6422682 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 77072124 is about 8779.0730717998. The cubic root of 77072124 is about 425.5648756393.

The spelling of 77072124 in words is "seventy-seven million, seventy-two thousand, one hundred twenty-four".