72073455 has 32 divisors (see below), whose sum is σ = 122860800. Its totient is φ = 35953152.

The previous prime is 72073433. The next prime is 72073459. The reversal of 72073455 is 55437027.

It is not a de Polignac number, because 72073455 - 2⁵ = 72073423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72073459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44856 + ... + 46434.

It is an arithmetic number, because the mean of its divisors is an integer number (3839400).

Almost surely, 2^72073455 is an apocalyptic number.

72073455 is a deficient number, since it is larger than the sum of its proper divisors (50787345).

72073455 is a wasteful number, since it uses less digits than its factorization.

72073455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 72073455 is about 8489.6086482240. The cubic root of 72073455 is about 416.1581911165.

The spelling of 72073455 in words is "seventy-two million, seventy-three thousand, four hundred fifty-five".