72260405 has 8 divisors (see below), whose sum is σ = 99100032. Its totient is φ = 49549968.

The previous prime is 72260393. The next prime is 72260423. The reversal of 72260405 is 50406227.

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 72260405 - 2¹⁰ = 72259381 is a prime.

It is a super-2 number, since 2×72260405² = 10443132261528050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032257 + ... + 1032326.

It is an arithmetic number, because the mean of its divisors is an integer number (12387504).

Almost surely, 2^72260405 is an apocalyptic number.

It is an amenable number.

72260405 is a deficient number, since it is larger than the sum of its proper divisors (26839627).

72260405 is a wasteful number, since it uses less digits than its factorization.

72260405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064595.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 72260405 is about 8500.6120367889. The cubic root of 72260405 is about 416.5177021271.

The spelling of 72260405 in words is "seventy-two million, two hundred sixty thousand, four hundred five".