20954002 has 4 divisors (see below), whose sum is σ = 31431006. Its totient is φ = 10477000.

The previous prime is 20953997. The next prime is 20954009. The reversal of 20954002 is 20045902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14907321 + 6046681 = 3861^2 + 2459^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20954009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5238499 + ... + 5238502.

Almost surely, 2^20954002 is an apocalyptic number.

20954002 is a deficient number, since it is larger than the sum of its proper divisors (10477004).

20954002 is a wasteful number, since it uses less digits than its factorization.

20954002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10477003.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20954002 is about 4577.5541504170. The cubic root of 20954002 is about 275.6908338858.

Adding to 20954002 its reverse (20045902), we get a palindrome (40999904).

The spelling of 20954002 in words is "twenty million, nine hundred fifty-four thousand, two".