20732260 has 12 divisors (see below), whose sum is σ = 43537788. Its totient is φ = 8292896.

The previous prime is 20732233. The next prime is 20732263. The reversal of 20732260 is 6223702.

It can be written as a sum of positive squares in 2 ways, for example, as 16305444 + 4426816 = 4038^2 + 2104^2 .

It is not an unprimeable number, because it can be changed into a prime (20732263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518287 + ... + 518326.

It is an arithmetic number, because the mean of its divisors is an integer number (3628149).

Almost surely, 2^20732260 is an apocalyptic number.

20732260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20732260 is an abundant number, since it is smaller than the sum of its proper divisors (22805528).

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

20732260 is a wasteful number, since it uses less digits than its factorization.

20732260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036622 (or 1036620 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20732260 is about 4553.2691552334. The cubic root of 20732260 is about 274.7149001237.

Adding to 20732260 its reverse (6223702), we get a palindrome (26955962).

The spelling of 20732260 in words is "twenty million, seven hundred thirty-two thousand, two hundred sixty".