23206740 has 48 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 6167680.

The previous prime is 23206727. The next prime is 23206763. The reversal of 23206740 is 4760232.

It is a self number, because there is not a number n which added to its sum of digits gives 23206740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27241 + ... + 28079.

It is an arithmetic number, because the mean of its divisors is an integer number (1358280).

Almost surely, 2^23206740 is an apocalyptic number.

23206740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23206740 is an abundant number, since it is smaller than the sum of its proper divisors (41990700).

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

23206740 is a wasteful number, since it uses less digits than its factorization.

23206740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 23206740 is about 4817.3374388764. The cubic root of 23206740 is about 285.2362460957.

Adding to 23206740 its reverse (4760232), we get a palindrome (27966972).

The spelling of 23206740 in words is "twenty-three million, two hundred six thousand, seven hundred forty".