20268260228 has 12 divisors (see below), whose sum is σ = 35473742220. Its totient is φ = 10132905312.

The previous prime is 20268260219. The next prime is 20268260237. The reversal of 20268260228 is 82206286202.

It is an interprime number because it is at equal distance from previous prime (20268260219) and next prime (20268260237).

It can be written as a sum of positive squares in 2 ways, for example, as 6696476224 + 13571784004 = 81832^2 + 116498^2 .

It is a super-2 number, since 2×20268260228² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20268260191 and 20268260200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268451 + ... + 335562.

It is an arithmetic number, because the mean of its divisors is an integer number (2956145185).

Almost surely, 2^20268260228 is an apocalyptic number.

It is an amenable number.

20268260228 is a deficient number, since it is larger than the sum of its proper divisors (15205481992).

20268260228 is a wasteful number, since it uses less digits than its factorization.

20268260228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612406 (or 612404 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 20268260228 in words is "twenty billion, two hundred sixty-eight million, two hundred sixty thousand, two hundred twenty-eight".