123447264 has 48 divisors (see below), whose sum is σ = 325966032. Its totient is φ = 40905728.

The previous prime is 123447263. The next prime is 123447271. The reversal of 123447264 is 462744321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123447263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12892 + ... + 20324.

It is an arithmetic number, because the mean of its divisors is an integer number (6790959).

Almost surely, 2^123447264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123447264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162983016).

123447264 is an abundant number, since it is smaller than the sum of its proper divisors (202518768).

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

123447264 is a wasteful number, since it uses less digits than its factorization.

123447264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7619 (or 7611 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 123447264 is about 11110.6824272859. The cubic root of 123447264 is about 497.9210532747.

The spelling of 123447264 in words is "one hundred twenty-three million, four hundred forty-seven thousand, two hundred sixty-four".