20023464 has 16 divisors (see below), whose sum is σ = 50058720. Its totient is φ = 6674480.

The previous prime is 20023463. The next prime is 20023469. The reversal of 20023464 is 46432002.

It is a super-2 number, since 2×20023464² = 801878221118592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20023464.

It is not an unprimeable number, because it can be changed into a prime (20023463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417132 + ... + 417179.

It is an arithmetic number, because the mean of its divisors is an integer number (3128670).

Almost surely, 2^20023464 is an apocalyptic number.

20023464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20023464 is an abundant number, since it is smaller than the sum of its proper divisors (30035256).

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

20023464 is a wasteful number, since it uses less digits than its factorization.

20023464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834320 (or 834316 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20023464 is about 4474.7585409718. The cubic root of 20023464 is about 271.5478719990.

Adding to 20023464 its reverse (46432002), we get a palindrome (66455466).

The spelling of 20023464 in words is "twenty million, twenty-three thousand, four hundred sixty-four".