20740260 has 48 divisors (see below), whose sum is σ = 59496192. Its totient is φ = 5395200.

The previous prime is 20740259. The next prime is 20740261. The reversal of 20740260 is 6204702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20740259) and next prime (20740261).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (1239504).

Almost surely, 2^20740260 is an apocalyptic number.

20740260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20740260 is an abundant number, since it is smaller than the sum of its proper divisors (38755932).

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

20740260 is a wasteful number, since it uses less digits than its factorization.

20740260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8484 (or 8482 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20740260 is about 4554.1475601917. The cubic root of 20740260 is about 274.7502305152.

Adding to 20740260 its reverse (6204702), we get a palindrome (26944962).

The spelling of 20740260 in words is "twenty million, seven hundred forty thousand, two hundred sixty".