72447076 has 24 divisors (see below), whose sum is σ = 143722880. Its totient is φ = 31676832.

The previous prime is 72447071. The next prime is 72447083. The reversal of 72447076 is 67074427.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72447071) 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 7 ways as a sum of consecutive naturals, for example, 35676 + ... + 37651.

Almost surely, 2^72447076 is an apocalyptic number.

72447076 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

72447076 is a deficient number, since it is larger than the sum of its proper divisors (71275804).

72447076 is a wasteful number, since it uses less digits than its factorization.

72447076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73363 (or 73361 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 72447076 is about 8511.5848113028. The cubic root of 72447076 is about 416.8760584523.

The spelling of 72447076 in words is "seventy-two million, four hundred forty-seven thousand, seventy-six".