249853830 has 32 divisors (see below), whose sum is σ = 625722624. Its totient is φ = 63730656.

The previous prime is 249853823. The next prime is 249853837. The reversal of 249853830 is 38358942.

It is an interprime number because it is at equal distance from previous prime (249853823) and next prime (249853837).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249853837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180364 + ... + 181743.

It is an arithmetic number, because the mean of its divisors is an integer number (19553832).

Almost surely, 2^249853830 is an apocalyptic number.

249853830 is an abundant number, since it is smaller than the sum of its proper divisors (375868794).

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

249853830 is a wasteful number, since it uses less digits than its factorization.

249853830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362140.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 249853830 is about 15806.7653237467. The cubic root of 249853830 is about 629.8377259050.

The spelling of 249853830 in words is "two hundred forty-nine million, eight hundred fifty-three thousand, eight hundred thirty".