20742316 has 24 divisors (see below), whose sum is σ = 41601056. Its totient is φ = 8864640.

The previous prime is 20742307. The next prime is 20742353. The reversal of 20742316 is 61324702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11986 + ... + 13606.

Almost surely, 2^20742316 is an apocalyptic number.

It is an amenable number.

20742316 is an abundant number, since it is smaller than the sum of its proper divisors (20858740).

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

20742316 is a wasteful number, since it uses less digits than its factorization.

20742316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20742316 is about 4554.3732829007. The cubic root of 20742316 is about 274.7593089582.

The spelling of 20742316 in words is "twenty million, seven hundred forty-two thousand, three hundred sixteen".