20080740 has 48 divisors (see below), whose sum is σ = 59536512. Its totient is φ = 5039616.

The previous prime is 20080733. The next prime is 20080741. The reversal of 20080740 is 4708002.

20080740 = T₄₇₄ + T₄₇₅ + ... + T₆₀₉.

It is a happy number.

It is a super-2 number, since 2×20080740² = 806472237895200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20080741) 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, 8824 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (1240344).

Almost surely, 2^20080740 is an apocalyptic number.

20080740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20080740 is an abundant number, since it is smaller than the sum of its proper divisors (39455772).

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

20080740 is a wasteful number, since it uses less digits than its factorization.

20080740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716 (or 19714 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20080740 is about 4481.1538692618. The cubic root of 20080740 is about 271.8065413577.

Adding to 20080740 its reverse (4708002), we get a palindrome (24788742).

The spelling of 20080740 in words is "twenty million, eighty thousand, seven hundred forty".