18701244 has 54 divisors (see below), whose sum is σ = 49926240. Its totient is φ = 5901552.

The previous prime is 18701237. The next prime is 18701251. The reversal of 18701244 is 44210781.

It is an interprime number because it is at equal distance from previous prime (18701237) and next prime (18701251).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12277 + ... + 13715.

It is an arithmetic number, because the mean of its divisors is an integer number (924560).

Almost surely, 2^18701244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18701244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24963120).

18701244 is an abundant number, since it is smaller than the sum of its proper divisors (31224996).

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

18701244 is a wasteful number, since it uses less digits than its factorization.

18701244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 18701244 is about 4324.4934963531. The cubic root of 18701244 is about 265.4341713865.

The spelling of 18701244 in words is "eighteen million, seven hundred one thousand, two hundred forty-four".