72603224 has 8 divisors (see below), whose sum is σ = 136131060. Its totient is φ = 36301608.

The previous prime is 72603197. The next prime is 72603227. The reversal of 72603224 is 42230627.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 72603193 and 72603202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72603227) 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 as a sum of consecutive naturals, namely, 4537694 + ... + 4537709.

Almost surely, 2^72603224 is an apocalyptic number.

It is an amenable number.

72603224 is a deficient number, since it is larger than the sum of its proper divisors (63527836).

72603224 is a wasteful number, since it uses less digits than its factorization.

72603224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075409 (or 9075405 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 72603224 is about 8520.7525489243. The cubic root of 72603224 is about 417.1753465924.

It can be divided in two parts, 72603 and 224, that added together give a palindrome (72827).

The spelling of 72603224 in words is "seventy-two million, six hundred three thousand, two hundred twenty-four".