249849628 has 36 divisors (see below), whose sum is σ = 510898752. Its totient is φ = 106599360.

The previous prime is 249849623. The next prime is 249849631. The reversal of 249849628 is 826948942.

It is a super-2 number, since 2×249849628² = 124849673223476768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249849623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42933 + ... + 48403.

It is an arithmetic number, because the mean of its divisors is an integer number (14191632).

Almost surely, 2^249849628 is an apocalyptic number.

249849628 is a gapful number since it is divisible by the number (28) 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 249849628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255449376).

249849628 is an abundant number, since it is smaller than the sum of its proper divisors (261049124).

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

249849628 is a wasteful number, since it uses less digits than its factorization.

249849628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722 (or 5713 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 249849628 is about 15806.6324054177. The cubic root of 249849628 is about 629.8341950500.

The spelling of 249849628 in words is "two hundred forty-nine million, eight hundred forty-nine thousand, six hundred twenty-eight".