20603612 has 12 divisors (see below), whose sum is σ = 36106560. Its totient is φ = 10287456.

The previous prime is 20603603. The next prime is 20603621. The reversal of 20603612 is 21630602.

It is an interprime number because it is at equal distance from previous prime (20603603) and next prime (20603621).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 6419.

It is an arithmetic number, because the mean of its divisors is an integer number (3008880).

Almost surely, 2^20603612 is an apocalyptic number.

It is an amenable number.

20603612 is a deficient number, since it is larger than the sum of its proper divisors (15502948).

20603612 is a wasteful number, since it uses less digits than its factorization.

20603612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180 (or 7178 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20603612 is about 4539.1201790655. The cubic root of 20603612 is about 274.1454996495.

The spelling of 20603612 in words is "twenty million, six hundred three thousand, six hundred twelve".