249778036 has 24 divisors (see below), whose sum is σ = 451858176. Its totient is φ = 120687360.

The previous prime is 249778033. The next prime is 249778049. The reversal of 249778036 is 630877942.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249778033) 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 7 ways as a sum of consecutive naturals, for example, 146340 + ... + 148036.

It is an arithmetic number, because the mean of its divisors is an integer number (18827424).

Almost surely, 2^249778036 is an apocalyptic number.

It is an amenable number.

249778036 is a deficient number, since it is larger than the sum of its proper divisors (202080140).

249778036 is a wasteful number, since it uses less digits than its factorization.

249778036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 249778036 is about 15804.3676241728. The cubic root of 249778036 is about 629.7740316662.

The spelling of 249778036 in words is "two hundred forty-nine million, seven hundred seventy-eight thousand, thirty-six".