20077172 has 12 divisors (see below), whose sum is σ = 35476896. Its totient is φ = 9940920.

The previous prime is 20077171. The next prime is 20077217. The reversal of 20077172 is 27177002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20077171) 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, 23954 + ... + 24777.

It is an arithmetic number, because the mean of its divisors is an integer number (2956408).

Almost surely, 2^20077172 is an apocalyptic number.

It is an amenable number.

20077172 is a deficient number, since it is larger than the sum of its proper divisors (15399724).

20077172 is a wasteful number, since it uses less digits than its factorization.

20077172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48838 (or 48836 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 20077172 is about 4480.7557398278. The cubic root of 20077172 is about 271.7904419645.

The spelling of 20077172 in words is "twenty million, seventy-seven thousand, one hundred seventy-two".