289621374 has 32 divisors (see below), whose sum is σ = 668428800. Its totient is φ = 81944352.

The previous prime is 289621349. The next prime is 289621403. The reversal of 289621374 is 473126982.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29149 + ... + 37800.

It is an arithmetic number, because the mean of its divisors is an integer number (20888400).

Almost surely, 2^289621374 is an apocalyptic number.

289621374 is an abundant number, since it is smaller than the sum of its proper divisors (378807426).

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

289621374 is a wasteful number, since it uses less digits than its factorization.

289621374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67064.

The product of its digits is 145152, while the sum is 42.

The square root of 289621374 is about 17018.2658928576. The cubic root of 289621374 is about 661.6224043326.

The spelling of 289621374 in words is "two hundred eighty-nine million, six hundred twenty-one thousand, three hundred seventy-four".