72403083 has 6 divisors (see below), whose sum is σ = 104582244. Its totient is φ = 48268716.

The previous prime is 72403061. The next prime is 72403087. The reversal of 72403083 is 38030427.

It is a de Polignac number, because none of the positive numbers 2^k-72403083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72403087) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4022385 + ... + 4022402.

It is an arithmetic number, because the mean of its divisors is an integer number (17430374).

Almost surely, 2^72403083 is an apocalyptic number.

72403083 is a deficient number, since it is larger than the sum of its proper divisors (32179161).

72403083 is a wasteful number, since it uses less digits than its factorization.

72403083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044793 (or 8044790 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 72403083 is about 8509.0001175226. Note that the first 3 decimals coincide. The cubic root of 72403083 is about 416.7916596382.

The spelling of 72403083 in words is "seventy-two million, four hundred three thousand, eighty-three".