20738140 has 24 divisors (see below), whose sum is σ = 43700832. Its totient is φ = 8266560.

The previous prime is 20738119. The next prime is 20738141. The reversal of 20738140 is 4183702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738141) 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, 4705 + ... + 7975.

It is an arithmetic number, because the mean of its divisors is an integer number (1820868).

Almost surely, 2^20738140 is an apocalyptic number.

20738140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20738140 is an abundant number, since it is smaller than the sum of its proper divisors (22962692).

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

20738140 is a wasteful number, since it uses less digits than its factorization.

20738140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597 (or 3595 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20738140 is about 4553.9147993787. The cubic root of 20738140 is about 274.7408688463.

The spelling of 20738140 in words is "twenty million, seven hundred thirty-eight thousand, one hundred forty".