1244620284 has 24 divisors (see below), whose sum is σ = 2908002048. Its totient is φ = 414318000.

The previous prime is 1244620283. The next prime is 1244620291. The reversal of 1244620284 is 4820264421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244620283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60042 + ... + 78065.

It is an arithmetic number, because the mean of its divisors is an integer number (121166752).

Almost surely, 2^1244620284 is an apocalyptic number.

It is an amenable number.

1244620284 is an abundant number, since it is smaller than the sum of its proper divisors (1663381764).

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

1244620284 is a wasteful number, since it uses less digits than its factorization.

1244620284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138865 (or 138863 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 1244620284 is about 35279.1763509297. The cubic root of 1244620284 is about 1075.6697564952.

The spelling of 1244620284 in words is "one billion, two hundred forty-four million, six hundred twenty thousand, two hundred eighty-four".