20142760 has 32 divisors (see below), whose sum is σ = 49442400. Its totient is φ = 7324480.

The previous prime is 20142757. The next prime is 20142761. The reversal of 20142760 is 6724102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20142761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22450 + ... + 23329.

It is an arithmetic number, because the mean of its divisors is an integer number (1545075).

Almost surely, 2^20142760 is an apocalyptic number.

20142760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20142760 is an abundant number, since it is smaller than the sum of its proper divisors (29299640).

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

20142760 is a wasteful number, since it uses less digits than its factorization.

20142760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45801 (or 45797 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20142760 is about 4488.0686269263. The cubic root of 20142760 is about 272.0860814626.

Adding to 20142760 its reverse (6724102), we get a palindrome (26866862).

It can be divided in two parts, 20142 and 760, that added together give a palindrome (20902).

The spelling of 20142760 in words is "twenty million, one hundred forty-two thousand, seven hundred sixty".