289299420 has 72 divisors (see below), whose sum is σ = 892447920. Its totient is φ = 75836160.

The previous prime is 289299419. The next prime is 289299457. The reversal of 289299420 is 24992982.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3001 + ... + 24240.

It is an arithmetic number, because the mean of its divisors is an integer number (12395110).

Almost surely, 2^289299420 is an apocalyptic number.

289299420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289299420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446223960).

289299420 is an abundant number, since it is smaller than the sum of its proper divisors (603148500).

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

289299420 is a wasteful number, since it uses less digits than its factorization.

289299420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27315 (or 27310 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 289299420 is about 17008.8041907713. The cubic root of 289299420 is about 661.3771519926.

The spelling of 289299420 in words is "two hundred eighty-nine million, two hundred ninety-nine thousand, four hundred twenty".