289749072 has 40 divisors (see below), whose sum is σ = 768753376. Its totient is φ = 93972096.

The previous prime is 289749049. The next prime is 289749073. The reversal of 289749072 is 270947982.

It is a super-2 number, since 2×289749072² = 167909049449722368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289749073) 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, 79798 + ... + 83349.

Almost surely, 2^289749072 is an apocalyptic number.

It is an amenable number.

289749072 is an abundant number, since it is smaller than the sum of its proper divisors (479004304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289749072 is a wasteful number, since it uses less digits than its factorization.

289749072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163195 (or 163189 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 289749072 is about 17022.0172717572. The cubic root of 289749072 is about 661.7196294814.

The spelling of 289749072 in words is "two hundred eighty-nine million, seven hundred forty-nine thousand, seventy-two".