289930040 has 16 divisors (see below), whose sum is σ = 652342680. Its totient is φ = 115972000.

The previous prime is 289930033. The next prime is 289930051. The reversal of 289930040 is 40039982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3624086 + ... + 3624165.

Almost surely, 2^289930040 is an apocalyptic number.

289930040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289930040 is an abundant number, since it is smaller than the sum of its proper divisors (362412640).

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

289930040 is a wasteful number, since it uses less digits than its factorization.

289930040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248262 (or 7248258 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 289930040 is about 17027.3321457003. The cubic root of 289930040 is about 661.8573637803.

The spelling of 289930040 in words is "two hundred eighty-nine million, nine hundred thirty thousand, forty".