23247405 has 40 divisors (see below), whose sum is σ = 42401304. Its totient is φ = 12182400.

The previous prime is 23247403. The next prime is 23247407. The reversal of 23247405 is 50474232.

It is an interprime number because it is at equal distance from previous prime (23247403) and next prime (23247407).

It can be written as a sum of positive squares in 4 ways, for example, as 149769 + 23097636 = 387^2 + 4806^2 .

It is not a de Polignac number, because 23247405 - 2¹ = 23247403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23247403) 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 39 ways as a sum of consecutive naturals, for example, 24235 + ... + 25175.

Almost surely, 2^23247405 is an apocalyptic number.

It is an amenable number.

23247405 is a deficient number, since it is larger than the sum of its proper divisors (19153899).

23247405 is an equidigital number, since it uses as much as digits as its factorization.

23247405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 23247405 is about 4821.5562840228. The cubic root of 23247405 is about 285.4027546691.

The spelling of 23247405 in words is "twenty-three million, two hundred forty-seven thousand, four hundred five".