20536372 has 12 divisors (see below), whose sum is σ = 36180900. Its totient is φ = 10198976.

The previous prime is 20536361. The next prime is 20536381. The reversal of 20536372 is 27363502.

It can be written as a sum of positive squares in 2 ways, for example, as 7257636 + 13278736 = 2694^2 + 3644^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20536372.

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, 16633 + ... + 17824.

It is an arithmetic number, because the mean of its divisors is an integer number (3015075).

Almost surely, 2^20536372 is an apocalyptic number.

It is an amenable number.

20536372 is a deficient number, since it is larger than the sum of its proper divisors (15644528).

20536372 is a wasteful number, since it uses less digits than its factorization.

20536372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34610 (or 34608 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20536372 is about 4531.7074045000. The cubic root of 20536372 is about 273.8469495298.

Adding to 20536372 its reverse (27363502), we get a palindrome (47899874).

The spelling of 20536372 in words is "twenty million, five hundred thirty-six thousand, three hundred seventy-two".