20607380 has 12 divisors (see below), whose sum is σ = 43275540. Its totient is φ = 8242944.

The previous prime is 20607361. The next prime is 20607413. The reversal of 20607380 is 8370602.

It can be written as a sum of positive squares in 2 ways, for example, as 16289296 + 4318084 = 4036^2 + 2078^2 .

It is a super-2 number, since 2×20607380² = 849328220928800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515165 + ... + 515204.

It is an arithmetic number, because the mean of its divisors is an integer number (3606295).

Almost surely, 2^20607380 is an apocalyptic number.

20607380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20607380 is an abundant number, since it is smaller than the sum of its proper divisors (22668160).

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

20607380 is a wasteful number, since it uses less digits than its factorization.

20607380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030378 (or 1030376 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20607380 is about 4539.5352184998. The cubic root of 20607380 is about 274.1622105912.

Adding to 20607380 its reverse (8370602), we get a palindrome (28977982).

The spelling of 20607380 in words is "twenty million, six hundred seven thousand, three hundred eighty".