20153534 has 16 divisors (see below), whose sum is σ = 33042816. Its totient is φ = 9177600.

The previous prime is 20153531. The next prime is 20153561. The reversal of 20153534 is 43535102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153531) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8507 + ... + 10614.

It is an arithmetic number, because the mean of its divisors is an integer number (2065176).

Almost surely, 2^20153534 is an apocalyptic number.

20153534 is a deficient number, since it is larger than the sum of its proper divisors (12889282).

20153534 is a wasteful number, since it uses less digits than its factorization.

20153534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19171.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20153534 is about 4489.2687600544. The cubic root of 20153534 is about 272.1345841328.

Adding to 20153534 its reverse (43535102), we get a palindrome (63688636).

It can be divided in two parts, 201 and 53534, that added together give a palindrome (53735).

The spelling of 20153534 in words is "twenty million, one hundred fifty-three thousand, five hundred thirty-four".