23381072 has 60 divisors (see below), whose sum is σ = 53681460. Its totient is φ = 9799680.

The previous prime is 23381063. The next prime is 23381119. The reversal of 23381072 is 27018332.

It can be written as a sum of positive squares in 2 ways, for example, as 1628176 + 21752896 = 1276^2 + 4664^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24704 + ... + 25632.

It is an arithmetic number, because the mean of its divisors is an integer number (894691).

Almost surely, 2^23381072 is an apocalyptic number.

23381072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23381072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26840730).

23381072 is an abundant number, since it is smaller than the sum of its proper divisors (30300388).

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

23381072 is a wasteful number, since it uses less digits than its factorization.

23381072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 23381072 is about 4835.3978119696. The cubic root of 23381072 is about 285.9487087507.

The spelling of 23381072 in words is "twenty-three million, three hundred eighty-one thousand, seventy-two".