76489940 has 12 divisors (see below), whose sum is σ = 160628916. Its totient is φ = 30595968.

The previous prime is 76489937. The next prime is 76489943. The reversal of 76489940 is 4998467.

It is an interprime number because it is at equal distance from previous prime (76489937) and next prime (76489943).

It can be written as a sum of positive squares in 2 ways, for example, as 21641104 + 54848836 = 4652^2 + 7406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76489943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912229 + ... + 1912268.

It is an arithmetic number, because the mean of its divisors is an integer number (13385743).

Almost surely, 2^76489940 is an apocalyptic number.

It is an amenable number.

76489940 is an abundant number, since it is smaller than the sum of its proper divisors (84138976).

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

76489940 is a wasteful number, since it uses less digits than its factorization.

76489940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824506 (or 3824504 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 76489940 is about 8745.8527314379. The cubic root of 76489940 is about 424.4906285057.

The spelling of 76489940 in words is "seventy-six million, four hundred eighty-nine thousand, nine hundred forty".