20442702 has 48 divisors (see below), whose sum is σ = 49116672. Its totient is φ = 5649840.

The previous prime is 20442691. The next prime is 20442707. The reversal of 20442702 is 20724402.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7993 + ... + 10235.

It is an arithmetic number, because the mean of its divisors is an integer number (1023264).

Almost surely, 2^20442702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20442702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24558336).

20442702 is an abundant number, since it is smaller than the sum of its proper divisors (28673970).

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

20442702 is a wasteful number, since it uses less digits than its factorization.

20442702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293 (or 2286 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 20442702 is about 4521.3606359148. The cubic root of 20442702 is about 273.4299602188.

The spelling of 20442702 in words is "twenty million, four hundred forty-two thousand, seven hundred two".