72427137 has 8 divisors (see below), whose sum is σ = 96761280. Its totient is φ = 48188880.

The previous prime is 72427099. The next prime is 72427139. The reversal of 72427137 is 73172427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72427137 - 2⁶ = 72427073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72427098 and 72427107.

It is not an unprimeable number, because it can be changed into a prime (72427139) 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, 22189 + ... + 25242.

It is an arithmetic number, because the mean of its divisors is an integer number (12095160).

Almost surely, 2^72427137 is an apocalyptic number.

It is an amenable number.

72427137 is a deficient number, since it is larger than the sum of its proper divisors (24334143).

72427137 is a wasteful number, since it uses less digits than its factorization.

72427137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47943.

The product of its digits is 16464, while the sum is 33.

The square root of 72427137 is about 8510.4134447158. The cubic root of 72427137 is about 416.8378105116.

The spelling of 72427137 in words is "seventy-two million, four hundred twenty-seven thousand, one hundred thirty-seven".