20264228402 has 12 divisors (see below), whose sum is σ = 33410856318. Its totient is φ = 9211012800.

The previous prime is 20264228401. The next prime is 20264228419. The reversal of 20264228402 is 20482246202.

It can be written as a sum of positive squares in only one way, i.e., 20263807201 + 421201 = 142351^2 + 649^2 .

It is not an unprimeable number, because it can be changed into a prime (20264228401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41867999 + ... + 41868482.

Almost surely, 2^20264228402 is an apocalyptic number.

20264228402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20264228402 is a deficient number, since it is larger than the sum of its proper divisors (13146627916).

20264228402 is a wasteful number, since it uses less digits than its factorization.

20264228402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83736505 (or 83736494 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 20264228402 in words is "twenty billion, two hundred sixty-four million, two hundred twenty-eight thousand, four hundred two".