249523274 has 64 divisors (see below), whose sum is σ = 524482560. Its totient is φ = 85821120.

The previous prime is 249523273. The next prime is 249523283. The reversal of 249523274 is 472325942.

249523274 = T₂₅₁ + T₂₅₂ + ... + T₁₁₄₇.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (249523273) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 43337 + ... + 48755.

It is an arithmetic number, because the mean of its divisors is an integer number (8195040).

Almost surely, 2^249523274 is an apocalyptic number.

249523274 is an abundant number, since it is smaller than the sum of its proper divisors (274959286).

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

249523274 is a wasteful number, since it uses less digits than its factorization.

249523274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475.

The product of its digits is 120960, while the sum is 38.

The square root of 249523274 is about 15796.3057073482. The cubic root of 249523274 is about 629.5598454053.

The spelling of 249523274 in words is "two hundred forty-nine million, five hundred twenty-three thousand, two hundred seventy-four".