72077836 has 24 divisors (see below), whose sum is σ = 129752784. Its totient is φ = 35013120.

The previous prime is 72077833. The next prime is 72077857. The reversal of 72077836 is 63877027.

It is not an unprimeable number, because it can be changed into a prime (72077833) 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, 45636 + ... + 47188.

It is an arithmetic number, because the mean of its divisors is an integer number (5406366).

Almost surely, 2^72077836 is an apocalyptic number.

It is an amenable number.

72077836 is a deficient number, since it is larger than the sum of its proper divisors (57674948).

72077836 is a wasteful number, since it uses less digits than its factorization.

72077836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 72077836 is about 8489.8666656197. The cubic root of 72077836 is about 416.1666230331.

The spelling of 72077836 in words is "seventy-two million, seventy-seven thousand, eight hundred thirty-six".