72292481 has 8 divisors (see below), whose sum is σ = 73180800. Its totient is φ = 71409520.

The previous prime is 72292469. The next prime is 72292489. The reversal of 72292481 is 18429227.

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

It is a cyclic number.

It is not a de Polignac number, because 72292481 - 2¹⁸ = 72030337 is a prime.

It is a super-2 number, since 2×72292481² = 10452405618270722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72292489) 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, 30155 + ... + 32463.

It is an arithmetic number, because the mean of its divisors is an integer number (9147600).

Almost surely, 2^72292481 is an apocalyptic number.

It is an amenable number.

72292481 is a deficient number, since it is larger than the sum of its proper divisors (888319).

72292481 is a wasteful number, since it uses less digits than its factorization.

72292481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679.

The product of its digits is 16128, while the sum is 35.

The square root of 72292481 is about 8502.4985151425. The cubic root of 72292481 is about 416.5793229897.

The spelling of 72292481 in words is "seventy-two million, two hundred ninety-two thousand, four hundred eighty-one".