20546154 has 12 divisors (see below), whose sum is σ = 44516706. Its totient is φ = 6848712.

The previous prime is 20546147. The next prime is 20546159. The reversal of 20546154 is 45164502.

It can be written as a sum of positive squares in only one way, i.e., 15000129 + 5546025 = 3873^2 + 2355^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20546159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570709 + ... + 570744.

Almost surely, 2^20546154 is an apocalyptic number.

20546154 is an abundant number, since it is smaller than the sum of its proper divisors (23970552).

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

20546154 is a wasteful number, since it uses less digits than its factorization.

20546154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141461 (or 1141458 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20546154 is about 4532.7865601636. The cubic root of 20546154 is about 273.8904227335.

The spelling of 20546154 in words is "twenty million, five hundred forty-six thousand, one hundred fifty-four".