23007530 has 64 divisors (see below), whose sum is σ = 51625728. Its totient is φ = 7188480.

The previous prime is 23007529. The next prime is 23007533. The reversal of 23007530 is 3570032.

23007530 = T₃₈₅ + T₃₈₆ + ... + T₅₇₉.

It is a super-3 number, since 3×23007530³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23007533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119114 + ... + 119306.

It is an arithmetic number, because the mean of its divisors is an integer number (806652).

Almost surely, 2^23007530 is an apocalyptic number.

23007530 is an abundant number, since it is smaller than the sum of its proper divisors (28618198).

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

23007530 is a wasteful number, since it uses less digits than its factorization.

23007530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 23007530 is about 4796.6165158370. The cubic root of 23007530 is about 284.4177298429.

Adding to 23007530 its reverse (3570032), we get a palindrome (26577562).

The spelling of 23007530 in words is "twenty-three million, seven thousand, five hundred thirty".