502287444 has 18 divisors (see below), whose sum is σ = 1269671130. Its totient is φ = 167429136.

The previous prime is 502287427. The next prime is 502287463. The reversal of 502287444 is 444782205.

It can be written as a sum of positive squares in only one way, i.e., 398002500 + 104284944 = 19950^2 + 10212^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 13952429 = 502287444 / (5 + 0 + 2 + 2 + 8 + 7 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 502287399 and 502287408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6976179 + ... + 6976250.

It is an arithmetic number, because the mean of its divisors is an integer number (70537285).

Almost surely, 2^502287444 is an apocalyptic number.

It is an amenable number.

502287444 is an abundant number, since it is smaller than the sum of its proper divisors (767383686).

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

502287444 is a wasteful number, since it uses less digits than its factorization.

502287444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13952439 (or 13952434 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 502287444 is about 22411.7702112082. The cubic root of 502287444 is about 794.9090485723.

The spelling of 502287444 in words is "five hundred two million, two hundred eighty-seven thousand, four hundred forty-four".