20620802 has 4 divisors (see below), whose sum is σ = 30931206. Its totient is φ = 10310400.

The previous prime is 20620801. The next prime is 20620807. The reversal of 20620802 is 20802602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20802602 = 2 ⋅10401301.

It can be written as a sum of positive squares in only one way, i.e., 20620681 + 121 = 4541^2 + 11^2 .

It is not an unprimeable number, because it can be changed into a prime (20620801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155199 + ... + 5155202.

Almost surely, 2^20620802 is an apocalyptic number.

20620802 is a deficient number, since it is larger than the sum of its proper divisors (10310404).

20620802 is a wasteful number, since it uses less digits than its factorization.

20620802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10310403.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20620802 is about 4541.0133230371. The cubic root of 20620802 is about 274.2217201224.

The spelling of 20620802 in words is "twenty million, six hundred twenty thousand, eight hundred two".