72002889 has 24 divisors (see below), whose sum is σ = 119114112. Its totient is φ = 41057280.

The previous prime is 72002881. The next prime is 72002897. The reversal of 72002889 is 98820027.

It is an interprime number because it is at equal distance from previous prime (72002881) and next prime (72002897).

It is not a de Polignac number, because 72002889 - 2³ = 72002881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72002881) 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, 39492 + ... + 41274.

It is an arithmetic number, because the mean of its divisors is an integer number (4963088).

Almost surely, 2^72002889 is an apocalyptic number.

It is an amenable number.

72002889 is a deficient number, since it is larger than the sum of its proper divisors (47111223).

72002889 is a wasteful number, since it uses less digits than its factorization.

72002889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 72002889 is about 8485.4516084885. The cubic root of 72002889 is about 416.0223287602.

The spelling of 72002889 in words is "seventy-two million, two thousand, eight hundred eighty-nine".