20273312 has 24 divisors (see below), whose sum is σ = 40036500. Its totient is φ = 10105344.

The previous prime is 20273303. The next prime is 20273321. The reversal of 20273312 is 21337202.

It is an interprime number because it is at equal distance from previous prime (20273303) and next prime (20273321).

It can be written as a sum of positive squares in 2 ways, for example, as 19749136 + 524176 = 4444^2 + 724^2 .

It is a super-2 number, since 2×20273312² = 822014358898688, which contains 22 as substring.

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, 12314 + ... + 13862.

Almost surely, 2^20273312 is an apocalyptic number.

It is an amenable number.

20273312 is a deficient number, since it is larger than the sum of its proper divisors (19763188).

20273312 is a wasteful number, since it uses less digits than its factorization.

20273312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20273312 is about 4502.5894771787. The cubic root of 20273312 is about 272.6726431725.

The spelling of 20273312 in words is "twenty million, two hundred seventy-three thousand, three hundred twelve".