20607320 has 32 divisors (see below), whose sum is σ = 47448720. Its totient is φ = 8050560.

The previous prime is 20607319. The next prime is 20607331. The reversal of 20607320 is 2370602.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20607292 and 20607301.

It is a congruent number.

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, 4271 + ... + 7710.

Almost surely, 2^20607320 is an apocalyptic number.

20607320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20607320 is an abundant number, since it is smaller than the sum of its proper divisors (26841400).

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

20607320 is a wasteful number, since it uses less digits than its factorization.

20607320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035 (or 12031 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20607320 is about 4539.5286098889. The cubic root of 20607320 is about 274.1619445094.

Adding to 20607320 its reverse (2370602), we get a palindrome (22977922).

The spelling of 20607320 in words is "twenty million, six hundred seven thousand, three hundred twenty".