72437730 has 16 divisors (see below), whose sum is σ = 173850624. Its totient is φ = 19316720.

The previous prime is 72437713. The next prime is 72437779. The reversal of 72437730 is 3773427.

It is a junction number, because it is equal to n+sod(n) for n = 72437691 and 72437700.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1207266 + ... + 1207325.

It is an arithmetic number, because the mean of its divisors is an integer number (10865664).

Almost surely, 2^72437730 is an apocalyptic number.

72437730 is an abundant number, since it is smaller than the sum of its proper divisors (101412894).

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

72437730 is a wasteful number, since it uses less digits than its factorization.

72437730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414601.

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 72437730 is about 8511.0357771543. The cubic root of 72437730 is about 416.8581313833.

The spelling of 72437730 in words is "seventy-two million, four hundred thirty-seven thousand, seven hundred thirty".