20270072 has 32 divisors (see below), whose sum is σ = 40294800. Its totient is φ = 9542400.

The previous prime is 20270059. The next prime is 20270077. The reversal of 20270072 is 27007202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8447 + ... + 10577.

Almost surely, 2^20270072 is an apocalyptic number.

It is an amenable number.

20270072 is a deficient number, since it is larger than the sum of its proper divisors (20024728).

20270072 is a wasteful number, since it uses less digits than its factorization.

20270072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 20270072 is about 4502.2296698414. The cubic root of 20270072 is about 272.6581165799.

Adding to 20270072 its reverse (27007202), we get a palindrome (47277274).

The spelling of 20270072 in words is "twenty million, two hundred seventy thousand, seventy-two".