20948036 has 6 divisors (see below), whose sum is σ = 36659070. Its totient is φ = 10474016.

The previous prime is 20948017. The next prime is 20948069. The reversal of 20948036 is 63084902.

It can be written as a sum of positive squares in only one way, i.e., 14394436 + 6553600 = 3794^2 + 2560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20947993 and 20948011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2618501 + ... + 2618508.

It is an arithmetic number, because the mean of its divisors is an integer number (6109845).

Almost surely, 2^20948036 is an apocalyptic number.

It is an amenable number.

20948036 is a deficient number, since it is larger than the sum of its proper divisors (15711034).

20948036 is a wasteful number, since it uses less digits than its factorization.

20948036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5237013 (or 5237011 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20948036 is about 4576.9024459781. The cubic root of 20948036 is about 275.6646666070.

The spelling of 20948036 in words is "twenty million, nine hundred forty-eight thousand, thirty-six".