23249420 has 12 divisors (see below), whose sum is σ = 48823824. Its totient is φ = 9299760.

The previous prime is 23249399. The next prime is 23249423. The reversal of 23249420 is 2494232.

It is a self number, because there is not a number n which added to its sum of digits gives 23249420.

It is not an unprimeable number, because it can be changed into a prime (23249423) 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, 581216 + ... + 581255.

It is an arithmetic number, because the mean of its divisors is an integer number (4068652).

Almost surely, 2^23249420 is an apocalyptic number.

23249420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23249420 is an abundant number, since it is smaller than the sum of its proper divisors (25574404).

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

23249420 is a wasteful number, since it uses less digits than its factorization.

23249420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162480 (or 1162478 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 23249420 is about 4821.7652369231. The cubic root of 23249420 is about 285.4110003197.

The spelling of 23249420 in words is "twenty-three million, two hundred forty-nine thousand, four hundred twenty".