244426140 has 96 divisors (see below), whose sum is σ = 869084160. Its totient is φ = 55867968.

The previous prime is 244426139. The next prime is 244426141. The reversal of 244426140 is 41624442.

It is a happy number.

244426140 is a `hidden beast` number, since 2 + 4 + 4 + 42 + 614 + 0 = 666.

244426140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (244426139) and next prime (244426141).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244426141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28552 + ... + 36111.

It is an arithmetic number, because the mean of its divisors is an integer number (9052960).

Almost surely, 2^244426140 is an apocalyptic number.

244426140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244426140 is an abundant number, since it is smaller than the sum of its proper divisors (624658020).

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

244426140 is a wasteful number, since it uses less digits than its factorization.

244426140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64688 (or 64680 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 244426140 is about 15634.1338103523. The cubic root of 244426140 is about 625.2435445520.

The spelling of 244426140 in words is "two hundred forty-four million, four hundred twenty-six thousand, one hundred forty".