76020640 has 48 divisors (see below), whose sum is σ = 182566440. Its totient is φ = 29905920.

The previous prime is 76020631. The next prime is 76020647. The reversal of 76020640 is 4602067.

It can be written as a sum of positive squares in 4 ways, for example, as 42981136 + 33039504 = 6556^2 + 5748^2 .

It is not an unprimeable number, because it can be changed into a prime (76020647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5866 + ... + 13654.

Almost surely, 2^76020640 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 76020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91283220).

76020640 is an abundant number, since it is smaller than the sum of its proper divisors (106545800).

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

76020640 is a wasteful number, since it uses less digits than its factorization.

76020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7865 (or 7857 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 76020640 is about 8718.9815919062. The cubic root of 76020640 is about 423.6207003051.

Subtracting from 76020640 its sum of digits (25), we obtain a triangular number (76020615 = T₁₂₃₃₀).

The spelling of 76020640 in words is "seventy-six million, twenty thousand, six hundred forty".