76621240 has 16 divisors (see below), whose sum is σ = 172397880. Its totient is φ = 30648480.

The previous prime is 76621217. The next prime is 76621241. The reversal of 76621240 is 4212667.

It is a junction number, because it is equal to n+sod(n) for n = 76621199 and 76621208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76621241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957726 + ... + 957805.

Almost surely, 2^76621240 is an apocalyptic number.

It is an amenable number.

76621240 is an abundant number, since it is smaller than the sum of its proper divisors (95776640).

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

76621240 is a wasteful number, since it uses less digits than its factorization.

76621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915542 (or 1915538 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 76621240 is about 8753.3559278713. The cubic root of 76621240 is about 424.7333783306.

The spelling of 76621240 in words is "seventy-six million, six hundred twenty-one thousand, two hundred forty".