244881021 has 16 divisors (see below), whose sum is σ = 407075328. Its totient is φ = 127210800.

The previous prime is 244881011. The next prime is 244881029. The reversal of 244881021 is 120188442.

It is not a de Polignac number, because 244881021 - 2⁶ = 244880957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244881021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244881029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529815 + ... + 530276.

It is an arithmetic number, because the mean of its divisors is an integer number (25442208).

Almost surely, 2^244881021 is an apocalyptic number.

244881021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

244881021 is a deficient number, since it is larger than the sum of its proper divisors (162194307).

244881021 is a wasteful number, since it uses less digits than its factorization.

244881021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060112.

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 244881021 is about 15648.6747362197. The cubic root of 244881021 is about 625.6311669773.

The spelling of 244881021 in words is "two hundred forty-four million, eight hundred eighty-one thousand, twenty-one".