20232420 has 48 divisors (see below), whose sum is σ = 61010880. Its totient is φ = 4980096.

The previous prime is 20232413. The next prime is 20232427. The reversal of 20232420 is 2423202.

It is an interprime number because it is at equal distance from previous prime (20232413) and next prime (20232427).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20232420.

It is not an unprimeable number, because it can be changed into a prime (20232427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12190 + ... + 13749.

It is an arithmetic number, because the mean of its divisors is an integer number (1271060).

Almost surely, 2^20232420 is an apocalyptic number.

20232420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20232420 is an abundant number, since it is smaller than the sum of its proper divisors (40778460).

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

20232420 is a wasteful number, since it uses less digits than its factorization.

20232420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25964 (or 25962 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20232420 is about 4498.0462425369. The cubic root of 20232420 is about 272.4891895944.

Adding to 20232420 its reverse (2423202), we get a palindrome (22655622).

The spelling of 20232420 in words is "twenty million, two hundred thirty-two thousand, four hundred twenty".