20900037 has 8 divisors (see below), whose sum is σ = 28546560. Its totient is φ = 13593440.

The previous prime is 20899993. The next prime is 20900051. The reversal of 20900037 is 73000902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20900037 - 2⁷ = 20899909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20899986 and 20900022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20907037) 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, 84837 + ... + 85082.

It is an arithmetic number, because the mean of its divisors is an integer number (3568320).

Almost surely, 2^20900037 is an apocalyptic number.

It is an amenable number.

20900037 is a deficient number, since it is larger than the sum of its proper divisors (7646523).

20900037 is a wasteful number, since it uses less digits than its factorization.

20900037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169963.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 20900037 is about 4571.6558269406. The cubic root of 20900037 is about 275.4539587511.

Adding to 20900037 its reverse (73000902), we get a palindrome (93900939).

The spelling of 20900037 in words is "twenty million, nine hundred thousand, thirty-seven".