20180772 has 24 divisors (see below), whose sum is σ = 52320800. Its totient is φ = 6726888.

The previous prime is 20180767. The next prime is 20180801. The reversal of 20180772 is 27708102.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93322 + ... + 93537.

Almost surely, 2^20180772 is an apocalyptic number.

It is an amenable number.

20180772 is an abundant number, since it is smaller than the sum of its proper divisors (32140028).

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

20180772 is a wasteful number, since it uses less digits than its factorization.

20180772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186872 (or 186864 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 20180772 is about 4492.3014146426. The cubic root of 20180772 is about 272.2571278177.

Adding to 20180772 its reverse (27708102), we get a palindrome (47888874).

The spelling of 20180772 in words is "twenty million, one hundred eighty thousand, seven hundred seventy-two".