20846742 has 32 divisors (see below), whose sum is σ = 48010752. Its totient is φ = 5911104.

The previous prime is 20846731. The next prime is 20846753. The reversal of 20846742 is 24764802.

It is an interprime number because it is at equal distance from previous prime (20846731) and next prime (20846753).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3943 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (1500336).

Almost surely, 2^20846742 is an apocalyptic number.

20846742 is an abundant number, since it is smaller than the sum of its proper divisors (27164010).

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

20846742 is a wasteful number, since it uses less digits than its factorization.

20846742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 20846742 is about 4565.8232554491. The cubic root of 20846742 is about 275.2196240034.

The spelling of 20846742 in words is "twenty million, eight hundred forty-six thousand, seven hundred forty-two".