20734774 has 8 divisors (see below), whose sum is σ = 31528440. Its totient is φ = 10225296.

The previous prime is 20734771. The next prime is 20734793. The reversal of 20734774 is 47743702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20734771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70864 + ... + 71155.

It is an arithmetic number, because the mean of its divisors is an integer number (3941055).

Almost surely, 2^20734774 is an apocalyptic number.

20734774 is a deficient number, since it is larger than the sum of its proper divisors (10793666).

20734774 is a wasteful number, since it uses less digits than its factorization.

20734774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142094.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 20734774 is about 4553.5452122495. The cubic root of 20734774 is about 274.7260036784.

The spelling of 20734774 in words is "twenty million, seven hundred thirty-four thousand, seven hundred seventy-four".