20011372 has 6 divisors (see below), whose sum is σ = 35019908. Its totient is φ = 10005684.

The previous prime is 20011361. The next prime is 20011373. The reversal of 20011372 is 27311002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20011373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501418 + ... + 2501425.

Almost surely, 2^20011372 is an apocalyptic number.

It is an amenable number.

20011372 is a deficient number, since it is larger than the sum of its proper divisors (15008536).

20011372 is a wasteful number, since it uses less digits than its factorization.

20011372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002847 (or 5002845 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20011372 is about 4473.4072025694. The cubic root of 20011372 is about 271.4931991735.

Adding to 20011372 its reverse (27311002), we get a palindrome (47322374).

The spelling of 20011372 in words is "twenty million, eleven thousand, three hundred seventy-two".