72629401 has 4 divisors (see below), whose sum is σ = 78216292. Its totient is φ = 67042512.

The previous prime is 72629393. The next prime is 72629449. The reversal of 72629401 is 10492627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4995225 + 67634176 = 2235^2 + 8224^2 .

It is a cyclic number.

It is not a de Polignac number, because 72629401 - 2³ = 72629393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72629461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2793426 + ... + 2793451.

It is an arithmetic number, because the mean of its divisors is an integer number (19554073).

Almost surely, 2^72629401 is an apocalyptic number.

It is an amenable number.

72629401 is a deficient number, since it is larger than the sum of its proper divisors (5586891).

72629401 is a wasteful number, since it uses less digits than its factorization.

72629401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586890.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 72629401 is about 8522.2884837349. The cubic root of 72629401 is about 417.2254779147.

The spelling of 72629401 in words is "seventy-two million, six hundred twenty-nine thousand, four hundred one".