20103654 has 32 divisors (see below), whose sum is σ = 41658336. Its totient is φ = 6462720.

The previous prime is 20103647. The next prime is 20103659. The reversal of 20103654 is 45630102.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20103654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30084 + ... + 30744.

It is an arithmetic number, because the mean of its divisors is an integer number (1301823).

Almost surely, 2^20103654 is an apocalyptic number.

20103654 is an abundant number, since it is smaller than the sum of its proper divisors (21554682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20103654 is a wasteful number, since it uses less digits than its factorization.

20103654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20103654 is about 4483.7098478827. The cubic root of 20103654 is about 271.9098876091.

Adding to 20103654 its reverse (45630102), we get a palindrome (65733756).

The spelling of 20103654 in words is "twenty million, one hundred three thousand, six hundred fifty-four".