20097774 has 32 divisors (see below), whose sum is σ = 47291040. Its totient is φ = 6304896.

The previous prime is 20097773. The next prime is 20097787. The reversal of 20097774 is 47779002.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20097773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10029 + ... + 11864.

It is an arithmetic number, because the mean of its divisors is an integer number (1477845).

Almost surely, 2^20097774 is an apocalyptic number.

20097774 is an abundant number, since it is smaller than the sum of its proper divisors (27193266).

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

20097774 is a wasteful number, since it uses less digits than its factorization.

20097774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21921 (or 21915 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 20097774 is about 4483.0540929148. The cubic root of 20097774 is about 271.8833752473.

The spelling of 20097774 in words is "twenty million, ninety-seven thousand, seven hundred seventy-four".