20386552 has 8 divisors (see below), whose sum is σ = 38224800. Its totient is φ = 10193272.

The previous prime is 20386549. The next prime is 20386567. The reversal of 20386552 is 25568302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20386552² = 831223004897408, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1274152 + ... + 1274167.

It is an arithmetic number, because the mean of its divisors is an integer number (4778100).

Almost surely, 2^20386552 is an apocalyptic number.

It is an amenable number.

20386552 is a deficient number, since it is larger than the sum of its proper divisors (17838248).

20386552 is a wasteful number, since it uses less digits than its factorization.

20386552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548325 (or 2548321 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20386552 is about 4515.1469522043. The cubic root of 20386552 is about 273.1793871692.

The spelling of 20386552 in words is "twenty million, three hundred eighty-six thousand, five hundred fifty-two".