23359428 has 60 divisors (see below), whose sum is σ = 64673532. Its totient is φ = 7326720.

The previous prime is 23359409. The next prime is 23359429. The reversal of 23359428 is 82495332.

It can be written as a sum of positive squares in 2 ways, for example, as 21233664 + 2125764 = 4608^2 + 1458^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23359392 and 23359401.

It is not an unprimeable number, because it can be changed into a prime (23359429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3388 + ... + 7628.

Almost surely, 2^23359428 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 23359428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32336766).

23359428 is an abundant number, since it is smaller than the sum of its proper divisors (41314104).

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

23359428 is a wasteful number, since it uses less digits than its factorization.

23359428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4263 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 23359428 is about 4833.1592152546. The cubic root of 23359428 is about 285.8604466928.

The spelling of 23359428 in words is "twenty-three million, three hundred fifty-nine thousand, four hundred twenty-eight".