76945140 has 60 divisors (see below), whose sum is σ = 241384836. Its totient is φ = 20518272.

The previous prime is 76945129. The next prime is 76945147. The reversal of 76945140 is 4154967.

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 24324624 = 7254^2 + 4932^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 76945095 and 76945104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76945147) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 22129 + ... + 25368.

Almost surely, 2^76945140 is an apocalyptic number.

It is an amenable number.

76945140 is an abundant number, since it is smaller than the sum of its proper divisors (164439696).

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

76945140 is a wasteful number, since it uses less digits than its factorization.

76945140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47518 (or 47507 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 76945140 is about 8771.8378917990. The cubic root of 76945140 is about 425.3310269909.

The spelling of 76945140 in words is "seventy-six million, nine hundred forty-five thousand, one hundred forty".