72446770 has 16 divisors (see below), whose sum is σ = 142259328. Its totient is φ = 26344240.

The previous prime is 72446747. The next prime is 72446779. The reversal of 72446770 is 7764427.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72446779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329194 + ... + 329413.

It is an arithmetic number, because the mean of its divisors is an integer number (8891208).

Almost surely, 2^72446770 is an apocalyptic number.

72446770 is a deficient number, since it is larger than the sum of its proper divisors (69812558).

72446770 is a wasteful number, since it uses less digits than its factorization.

72446770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658625.

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

The square root of 72446770 is about 8511.5668357829. The cubic root of 72446770 is about 416.8754715216.

The spelling of 72446770 in words is "seventy-two million, four hundred forty-six thousand, seven hundred seventy".