72401277 has 8 divisors (see below), whose sum is σ = 103960864. Its totient is φ = 44554608.

The previous prime is 72401261. The next prime is 72401279. The reversal of 72401277 is 77210427.

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

It is not a de Polignac number, because 72401277 - 2⁴ = 72401261 is a prime.

It is a super-2 number, since 2×72401277² = 10483889822461458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72401279) 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, 928183 + ... + 928260.

It is an arithmetic number, because the mean of its divisors is an integer number (12995108).

Almost surely, 2^72401277 is an apocalyptic number.

It is an amenable number.

72401277 is a deficient number, since it is larger than the sum of its proper divisors (31559587).

72401277 is a wasteful number, since it uses less digits than its factorization.

72401277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856459.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 72401277 is about 8508.8939939336. The cubic root of 72401277 is about 416.7881941689.

The spelling of 72401277 in words is "seventy-two million, four hundred one thousand, two hundred seventy-seven".