72703491 has 16 divisors (see below), whose sum is σ = 110913024. Its totient is φ = 41497344.

The previous prime is 72703489. The next prime is 72703511. The reversal of 72703491 is 19430727.

It is not a de Polignac number, because 72703491 - 2¹ = 72703489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72703691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26035 + ... + 28691.

It is an arithmetic number, because the mean of its divisors is an integer number (6932064).

Almost surely, 2^72703491 is an apocalyptic number.

72703491 is a deficient number, since it is larger than the sum of its proper divisors (38209533).

72703491 is a wasteful number, since it uses less digits than its factorization.

72703491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 72703491 is about 8526.6342128650. The cubic root of 72703491 is about 417.3673017027.

The spelling of 72703491 in words is "seventy-two million, seven hundred three thousand, four hundred ninety-one".