20701272 has 16 divisors (see below), whose sum is σ = 51753240. Its totient is φ = 6900416.

The previous prime is 20701243. The next prime is 20701277. The reversal of 20701272 is 27210702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20701277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431253 + ... + 431300.

Almost surely, 2^20701272 is an apocalyptic number.

It is an amenable number.

20701272 is an abundant number, since it is smaller than the sum of its proper divisors (31051968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20701272 is a wasteful number, since it uses less digits than its factorization.

20701272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862562 (or 862558 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 20701272 is about 4549.8650529439. The cubic root of 20701272 is about 274.5779620029.

Adding to 20701272 its reverse (27210702), we get a palindrome (47911974).

The spelling of 20701272 in words is "twenty million, seven hundred one thousand, two hundred seventy-two".