20369534 has 4 divisors (see below), whose sum is σ = 30554304. Its totient is φ = 10184766.

The previous prime is 20369527. The next prime is 20369549. The reversal of 20369534 is 43596302.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20369534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5092382 + ... + 5092385.

It is an arithmetic number, because the mean of its divisors is an integer number (7638576).

Almost surely, 2^20369534 is an apocalyptic number.

20369534 is a deficient number, since it is larger than the sum of its proper divisors (10184770).

20369534 is a wasteful number, since it uses less digits than its factorization.

20369534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184769.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 20369534 is about 4513.2620132228. The cubic root of 20369534 is about 273.1033523889.

The spelling of 20369534 in words is "twenty million, three hundred sixty-nine thousand, five hundred thirty-four".