20288074 has 16 divisors (see below), whose sum is σ = 31539456. Its totient is φ = 9777600.

The previous prime is 20288063. The next prime is 20288113. The reversal of 20288074 is 47088202.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 7 ways as a sum of consecutive naturals, for example, 20409 + ... + 21379.

It is an arithmetic number, because the mean of its divisors is an integer number (1971216).

Almost surely, 2^20288074 is an apocalyptic number.

20288074 is a deficient number, since it is larger than the sum of its proper divisors (11251382).

20288074 is a wasteful number, since it uses less digits than its factorization.

20288074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 20288074 is about 4504.2284577939. The cubic root of 20288074 is about 272.7388092561.

The spelling of 20288074 in words is "twenty million, two hundred eighty-eight thousand, seventy-four".