20761140 has 48 divisors (see below), whose sum is σ = 58423680. Its totient is φ = 5508480.

The previous prime is 20761099. The next prime is 20761159. The reversal of 20761140 is 4116702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12985 + ... + 14495.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^20761140 is an apocalyptic number.

20761140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20761140 is an abundant number, since it is smaller than the sum of its proper divisors (37662540).

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

20761140 is a wasteful number, since it uses less digits than its factorization.

20761140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20761140 is about 4556.4393993556. The cubic root of 20761140 is about 274.8424000563.

Adding to 20761140 its reverse (4116702), we get a palindrome (24877842).

The spelling of 20761140 in words is "twenty million, seven hundred sixty-one thousand, one hundred forty".