20489074 has 4 divisors (see below), whose sum is σ = 30733614. Its totient is φ = 10244536.

The previous prime is 20489059. The next prime is 20489081. The reversal of 20489074 is 47098402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18429849 + 2059225 = 4293^2 + 1435^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5122267 + ... + 5122270.

Almost surely, 2^20489074 is an apocalyptic number.

20489074 is a deficient number, since it is larger than the sum of its proper divisors (10244540).

20489074 is a wasteful number, since it uses less digits than its factorization.

20489074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10244539.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20489074 is about 4526.4858334032. The cubic root of 20489074 is about 273.6365525899.

The spelling of 20489074 in words is "twenty million, four hundred eighty-nine thousand, seventy-four".