72071433 has 24 divisors (see below), whose sum is σ = 119332928. Its totient is φ = 41059872.

The previous prime is 72071429. The next prime is 72071459. The reversal of 72071433 is 33417027.

It is not a de Polignac number, because 72071433 - 2² = 72071429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72071397 and 72071406.

It is not an unprimeable number, because it can be changed into a prime (72071423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21966 + ... + 25032.

Almost surely, 2^72071433 is an apocalyptic number.

It is an amenable number.

72071433 is a deficient number, since it is larger than the sum of its proper divisors (47261495).

72071433 is a wasteful number, since it uses less digits than its factorization.

72071433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 72071433 is about 8489.4895606273. The cubic root of 72071433 is about 416.1542993474.

The spelling of 72071433 in words is "seventy-two million, seventy-one thousand, four hundred thirty-three".