72290503 has 8 divisors (see below), whose sum is σ = 74168640. Its totient is φ = 70417920.

The previous prime is 72290483. The next prime is 72290549. The reversal of 72290503 is 30509227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72290503 - 2⁹ = 72289991 is a prime.

It is a super-3 number, since 3×72290503³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72290203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41751 + ... + 43447.

It is an arithmetic number, because the mean of its divisors is an integer number (9271080).

Almost surely, 2^72290503 is an apocalyptic number.

72290503 is a deficient number, since it is larger than the sum of its proper divisors (1878137).

72290503 is a wasteful number, since it uses less digits than its factorization.

72290503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 72290503 is about 8502.3821955967. The cubic root of 72290503 is about 416.5755236023.

The spelling of 72290503 in words is "seventy-two million, two hundred ninety thousand, five hundred three".