20261044 has 12 divisors (see below), whose sum is σ = 35589568. Its totient is φ = 10092600.

The previous prime is 20261039. The next prime is 20261071. The reversal of 20261044 is 44016202.

20261044 = 127² + 128² + ... + 397².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8262 + ... + 10429.

Almost surely, 2^20261044 is an apocalyptic number.

It is an amenable number.

20261044 is a deficient number, since it is larger than the sum of its proper divisors (15328524).

20261044 is a wasteful number, since it uses less digits than its factorization.

20261044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18966 (or 18964 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20261044 is about 4501.2269438454. The cubic root of 20261044 is about 272.6176312276.

Adding to 20261044 its reverse (44016202), we get a palindrome (64277246).

The spelling of 20261044 in words is "twenty million, two hundred sixty-one thousand, forty-four".