20535450 has 48 divisors (see below), whose sum is σ = 54850656. Its totient is φ = 5054400.

The previous prime is 20535413. The next prime is 20535461. The reversal of 20535450 is 5453502.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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 20535450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3316 + ... + 7215.

It is an arithmetic number, because the mean of its divisors is an integer number (1142722).

Almost surely, 2^20535450 is an apocalyptic number.

20535450 is an abundant number, since it is smaller than the sum of its proper divisors (34315206).

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

20535450 is a wasteful number, since it uses less digits than its factorization.

20535450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559 (or 10554 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 20535450 is about 4531.6056756960. The cubic root of 20535450 is about 273.8428512618.

Adding to 20535450 its reverse (5453502), we get a palindrome (25988952).

It can be divided in two parts, 2053 and 5450, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 20535450 in words is "twenty million, five hundred thirty-five thousand, four hundred fifty".