202540044 has 24 divisors (see below), whose sum is σ = 540107008. Its totient is φ = 57868560.

The previous prime is 202540027. The next prime is 202540087. The reversal of 202540044 is 440045202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 202540044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205512 + ... + 1205679.

Almost surely, 2^202540044 is an apocalyptic number.

It is an amenable number.

202540044 is an abundant number, since it is smaller than the sum of its proper divisors (337566964).

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

202540044 is a wasteful number, since it uses less digits than its factorization.

202540044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411205 (or 2411203 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 202540044 is about 14231.6564039468. The cubic root of 202540044 is about 587.2688515155.

Adding to 202540044 its reverse (440045202), we get a palindrome (642585246).

The spelling of 202540044 in words is "two hundred two million, five hundred forty thousand, forty-four".