72407450 has 48 divisors (see below), whose sum is σ = 142490880. Its totient is φ = 27318720.

The previous prime is 72407443. The next prime is 72407477. The reversal of 72407450 is 5470427.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90452 + ... + 91248.

It is an arithmetic number, because the mean of its divisors is an integer number (2968560).

Almost surely, 2^72407450 is an apocalyptic number.

72407450 is a deficient number, since it is larger than the sum of its proper divisors (70083430).

72407450 is a wasteful number, since it uses less digits than its factorization.

72407450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 72407450 is about 8509.2567242974. The cubic root of 72407450 is about 416.8000390815.

Adding to 72407450 its reverse (5470427), we get a palindrome (77877877).

The spelling of 72407450 in words is "seventy-two million, four hundred seven thousand, four hundred fifty".