20040154 has 8 divisors (see below), whose sum is σ = 30083508. Its totient is φ = 10012320.

The previous prime is 20040151. The next prime is 20040173. The reversal of 20040154 is 45104002.

It can be written as a sum of positive squares in 2 ways, for example, as 15000129 + 5040025 = 3873^2 + 2245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20040151) 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 3 ways as a sum of consecutive naturals, for example, 214 + ... + 6334.

Almost surely, 2^20040154 is an apocalyptic number.

20040154 is a deficient number, since it is larger than the sum of its proper divisors (10043354).

20040154 is a wasteful number, since it uses less digits than its factorization.

20040154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20040154 is about 4476.6230576183. The cubic root of 20040154 is about 271.6232980984.

Adding to 20040154 its reverse (45104002), we get a palindrome (65144156).

The spelling of 20040154 in words is "twenty million, forty thousand, one hundred fifty-four".