72962281 has 8 divisors (see below), whose sum is σ = 83444544. Its totient is φ = 62494800.

The previous prime is 72962273. The next prime is 72962287. The reversal of 72962281 is 18226927.

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 72962281 - 2³ = 72962273 is a prime.

It is a super-2 number, since 2×72962281² = 10646988897445922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72962281.

It is not an unprimeable number, because it can be changed into a prime (72962287) 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, 10566 + ... + 16048.

It is an arithmetic number, because the mean of its divisors is an integer number (10430568).

Almost surely, 2^72962281 is an apocalyptic number.

It is an amenable number.

72962281 is a deficient number, since it is larger than the sum of its proper divisors (10482263).

72962281 is a wasteful number, since it uses less digits than its factorization.

72962281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391.

The product of its digits is 24192, while the sum is 37.

The square root of 72962281 is about 8541.7961225962. The cubic root of 72962281 is about 417.8619252756.

The spelling of 72962281 in words is "seventy-two million, nine hundred sixty-two thousand, two hundred eighty-one".