72422724 has 24 divisors (see below), whose sum is σ = 184349088. Its totient is φ = 21946240.

The previous prime is 72422719. The next prime is 72422741. The reversal of 72422724 is 42722427.

It is a junction number, because it is equal to n+sod(n) for n = 72422691 and 72422700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274197 + ... + 274460.

It is an arithmetic number, because the mean of its divisors is an integer number (7681212).

Almost surely, 2^72422724 is an apocalyptic number.

It is an amenable number.

72422724 is an abundant number, since it is smaller than the sum of its proper divisors (111926364).

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

72422724 is a wasteful number, since it uses less digits than its factorization.

72422724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548675 (or 548673 counting only the distinct ones).

The product of its digits is 12544, while the sum is 30.

The square root of 72422724 is about 8510.1541701664. The cubic root of 72422724 is about 416.8293443359.

The spelling of 72422724 in words is "seventy-two million, four hundred twenty-two thousand, seven hundred twenty-four".