20450274 has 32 divisors (see below), whose sum is σ = 44271360. Its totient is φ = 6260352.

The previous prime is 20450263. The next prime is 20450281. The reversal of 20450274 is 47205402.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18094 + ... + 19190.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^20450274 is an apocalyptic number.

20450274 is an abundant number, since it is smaller than the sum of its proper divisors (23821086).

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

20450274 is a wasteful number, since it uses less digits than its factorization.

20450274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 20450274 is about 4522.1979169426. The cubic root of 20450274 is about 273.4637156405.

Adding to 20450274 its reverse (47205402), we get a palindrome (67655676).

The spelling of 20450274 in words is "twenty million, four hundred fifty thousand, two hundred seventy-four".