20738807 has 2 divisors, whose sum is σ = 20738808. Its totient is φ = 20738806.

The previous prime is 20738791. The next prime is 20738813. The reversal of 20738807 is 70883702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20738807 - 2⁴ = 20738791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20738407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10369403 + 10369404.

It is an arithmetic number, because the mean of its divisors is an integer number (10369404).

Almost surely, 2^20738807 is an apocalyptic number.

20738807 is a deficient number, since it is larger than the sum of its proper divisors (1).

20738807 is an equidigital number, since it uses as much as digits as its factorization.

20738807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20738807 is about 4553.9880324832. The cubic root of 20738807 is about 274.7438143081.

The spelling of 20738807 in words is "twenty million, seven hundred thirty-eight thousand, eight hundred seven".