20233770 has 32 divisors (see below), whose sum is σ = 48679488. Its totient is φ = 5382528.

The previous prime is 20233769. The next prime is 20233771. The reversal of 20233770 is 7733202.

It is an interprime number because it is at equal distance from previous prime (20233769) and next prime (20233771).

It is a self number, because there is not a number n which added to its sum of digits gives 20233770.

It is not an unprimeable number, because it can be changed into a prime (20233771) 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 15 ways as a sum of consecutive naturals, for example, 23182 + ... + 24038.

It is an arithmetic number, because the mean of its divisors is an integer number (1521234).

Almost surely, 2^20233770 is an apocalyptic number.

20233770 is an abundant number, since it is smaller than the sum of its proper divisors (28445718).

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

20233770 is a wasteful number, since it uses less digits than its factorization.

20233770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 20233770 is about 4498.1963051872. The cubic root of 20233770 is about 272.4952500364.

Adding to 20233770 its reverse (7733202), we get a palindrome (27966972).

The spelling of 20233770 in words is "twenty million, two hundred thirty-three thousand, seven hundred seventy".