72404101 has 24 divisors (see below), whose sum is σ = 92278592. Its totient is φ = 55598400.

The previous prime is 72404083. The next prime is 72404107. The reversal of 72404101 is 10140427.

It is not a de Polignac number, because 72404101 - 2⁷ = 72403973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72404107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61246 + ... + 62416.

Almost surely, 2^72404101 is an apocalyptic number.

It is an amenable number.

72404101 is a deficient number, since it is larger than the sum of its proper divisors (19874491).

72404101 is a wasteful number, since it uses less digits than its factorization.

72404101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 72404101 is about 8509.0599363267. The cubic root of 72404101 is about 416.7936130169.

Adding to 72404101 its reverse (10140427), we get a palindrome (82544528).

The spelling of 72404101 in words is "seventy-two million, four hundred four thousand, one hundred one".