20454874 has 16 divisors (see below), whose sum is σ = 33739776. Its totient is φ = 9223200.

The previous prime is 20454871. The next prime is 20454883. The reversal of 20454874 is 47845402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20454871) 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, 867 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (2108736).

Almost surely, 2^20454874 is an apocalyptic number.

20454874 is a deficient number, since it is larger than the sum of its proper divisors (13284902).

20454874 is a wasteful number, since it uses less digits than its factorization.

20454874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461.

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 20454874 is about 4522.7064905872. The cubic root of 20454874 is about 273.4842180355.

The spelling of 20454874 in words is "twenty million, four hundred fifty-four thousand, eight hundred seventy-four".