20123464 has 32 divisors (see below), whose sum is σ = 39709440. Its totient is φ = 9547200.

The previous prime is 20123443. The next prime is 20123479. The reversal of 20123464 is 46432102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12379 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (1240920).

Almost surely, 2^20123464 is an apocalyptic number.

It is an amenable number.

20123464 is a deficient number, since it is larger than the sum of its proper divisors (19585976).

20123464 is a wasteful number, since it uses less digits than its factorization.

20123464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20123464 is about 4485.9184120980. The cubic root of 20123464 is about 271.9991709894. Note that the first 3 decimals are identical.

Adding to 20123464 its reverse (46432102), we get a palindrome (66555566).

It can be divided in two parts, 2012 and 3464, that added together give a square (5476 = 74²).

The spelling of 20123464 in words is "twenty million, one hundred twenty-three thousand, four hundred sixty-four".