20469074 has 4 divisors (see below), whose sum is σ = 30703614. Its totient is φ = 10234536.

The previous prime is 20469073. The next prime is 20469079. The reversal of 20469074 is 47096402.

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., 20313049 + 156025 = 4507^2 + 395^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20469074.

It is not an unprimeable number, because it can be changed into a prime (20469073) by changing a digit.

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 as a sum of consecutive naturals, namely, 5117267 + ... + 5117270.

Almost surely, 2^20469074 is an apocalyptic number.

20469074 is a deficient number, since it is larger than the sum of its proper divisors (10234540).

20469074 is a wasteful number, since it uses less digits than its factorization.

20469074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234539.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 20469074 is about 4524.2760746886. The cubic root of 20469074 is about 273.5474886541.

The spelling of 20469074 in words is "twenty million, four hundred sixty-nine thousand, seventy-four".