72894285 has 24 divisors (see below), whose sum is σ = 127539360. Its totient is φ = 38511072.

The previous prime is 72894277. The next prime is 72894287. The reversal of 72894285 is 58249827.

It is not a de Polignac number, because 72894285 - 2³ = 72894277 is a prime.

It is a super-2 number, since 2×72894285² = 10627153571322450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72894285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72894287) 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, 2755 + ... + 12384.

It is an arithmetic number, because the mean of its divisors is an integer number (5314140).

Almost surely, 2^72894285 is an apocalyptic number.

It is an amenable number.

72894285 is a deficient number, since it is larger than the sum of its proper divisors (54645075).

72894285 is a wasteful number, since it uses less digits than its factorization.

72894285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15257 (or 15254 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 72894285 is about 8537.8150015095. The cubic root of 72894285 is about 417.7320784106.

The spelling of 72894285 in words is "seventy-two million, eight hundred ninety-four thousand, two hundred eighty-five".