20237742 has 64 divisors (see below), whose sum is σ = 52823040. Its totient is φ = 5622048.

The previous prime is 20237741. The next prime is 20237743. The reversal of 20237742 is 24773202.

It is an interprime number because it is at equal distance from previous prime (20237741) and next prime (20237743).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20237741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13263 + ... + 14709.

It is an arithmetic number, because the mean of its divisors is an integer number (825360).

Almost surely, 2^20237742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20237742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26411520).

20237742 is an abundant number, since it is smaller than the sum of its proper divisors (32585298).

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

20237742 is a wasteful number, since it uses less digits than its factorization.

20237742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20237742 is about 4498.6377938216. The cubic root of 20237742 is about 272.5130796404.

The spelling of 20237742 in words is "twenty million, two hundred thirty-seven thousand, seven hundred forty-two".