20261460 has 24 divisors (see below), whose sum is σ = 56732256. Its totient is φ = 5403040.

The previous prime is 20261431. The next prime is 20261497. The reversal of 20261460 is 6416202.

It is a happy number.

It is a super-2 number, since 2×20261460² = 821053522663200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 168786 + ... + 168905.

It is an arithmetic number, because the mean of its divisors is an integer number (2363844).

Almost surely, 2^20261460 is an apocalyptic number.

20261460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20261460 is an abundant number, since it is smaller than the sum of its proper divisors (36470796).

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

20261460 is a wasteful number, since it uses less digits than its factorization.

20261460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337703 (or 337701 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20261460 is about 4501.2731532312. The cubic root of 20261460 is about 272.6194970110.

Adding to 20261460 its reverse (6416202), we get a palindrome (26677662).

It can be divided in two parts, 2026 and 1460, that added together give a triangular number (3486 = T₈₃).

The spelling of 20261460 in words is "twenty million, two hundred sixty-one thousand, four hundred sixty".