244861820 has 36 divisors (see below), whose sum is σ = 598164840. Its totient is φ = 83952288.

The previous prime is 244861787. The next prime is 244861831. The reversal of 244861820 is 28168442.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123950 + ... + 125909.

It is an arithmetic number, because the mean of its divisors is an integer number (16615690).

Almost surely, 2^244861820 is an apocalyptic number.

244861820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244861820 is an abundant number, since it is smaller than the sum of its proper divisors (353303020).

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

244861820 is a wasteful number, since it uses less digits than its factorization.

244861820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249882 (or 249873 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 244861820 is about 15648.0612217616. The cubic root of 244861820 is about 625.6148147396.

The spelling of 244861820 in words is "two hundred forty-four million, eight hundred sixty-one thousand, eight hundred twenty".