249047420 has 24 divisors (see below), whose sum is σ = 523309248. Its totient is φ = 99560000.

The previous prime is 249047419. The next prime is 249047431. The reversal of 249047420 is 24740942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50045 + ... + 54795.

It is an arithmetic number, because the mean of its divisors is an integer number (21804552).

Almost surely, 2^249047420 is an apocalyptic number.

249047420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249047420 is an abundant number, since it is smaller than the sum of its proper divisors (274261828).

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

249047420 is a wasteful number, since it uses less digits than its factorization.

249047420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381 (or 7379 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 249047420 is about 15781.2363267267. The cubic root of 249047420 is about 629.1593894943.

The spelling of 249047420 in words is "two hundred forty-nine million, forty-seven thousand, four hundred twenty".