72010403 has 4 divisors (see below), whose sum is σ = 72028968. Its totient is φ = 71991840.

The previous prime is 72010381. The next prime is 72010409. The reversal of 72010403 is 30401027.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30401027 = 277 ⋅109751.

It is a cyclic number.

It is not a de Polignac number, because 72010403 - 2²⁶ = 4901539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72010409) 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, 1001 + ... + 12042.

It is an arithmetic number, because the mean of its divisors is an integer number (18007242).

Almost surely, 2^72010403 is an apocalyptic number.

72010403 is a deficient number, since it is larger than the sum of its proper divisors (18565).

72010403 is a wasteful number, since it uses less digits than its factorization.

72010403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18564.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 72010403 is about 8485.8943547513. The cubic root of 72010403 is about 416.0367998603.

The spelling of 72010403 in words is "seventy-two million, ten thousand, four hundred three".