249078870 has 24 divisors (see below), whose sum is σ = 647605296. Its totient is φ = 66421008.

The previous prime is 249078811. The next prime is 249078887. The reversal of 249078870 is 78870942.

249078870 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1383682 + ... + 1383861.

It is an arithmetic number, because the mean of its divisors is an integer number (26983554).

Almost surely, 2^249078870 is an apocalyptic number.

249078870 is an abundant number, since it is smaller than the sum of its proper divisors (398526426).

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

249078870 is a wasteful number, since it uses less digits than its factorization.

249078870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767556 (or 2767553 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 249078870 is about 15782.2327317778. The cubic root of 249078870 is about 629.1858720412.

The spelling of 249078870 in words is "two hundred forty-nine million, seventy-eight thousand, eight hundred seventy".