20069390 has 32 divisors (see below), whose sum is σ = 40334976. Its totient is φ = 7126560.

The previous prime is 20069389. The next prime is 20069417. The reversal of 20069390 is 9396002.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 2609 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (1260468).

Almost surely, 2^20069390 is an apocalyptic number.

20069390 is an abundant number, since it is smaller than the sum of its proper divisors (20265586).

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

20069390 is a wasteful number, since it uses less digits than its factorization.

20069390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 20069390 is about 4479.8872753675. The cubic root of 20069390 is about 271.7553217038.

The spelling of 20069390 in words is "twenty million, sixty-nine thousand, three hundred ninety".