12508740 has 36 divisors (see below), whose sum is σ = 37943724. Its totient is φ = 3335616.

The previous prime is 12508733. The next prime is 12508747. The reversal of 12508740 is 4780521.

It is an interprime number because it is at equal distance from previous prime (12508733) and next prime (12508747).

It can be written as a sum of positive squares in 2 ways, for example, as 9290304 + 3218436 = 3048^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (12508747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34567 + ... + 34926.

Almost surely, 2^12508740 is an apocalyptic number.

12508740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12508740 is an abundant number, since it is smaller than the sum of its proper divisors (25434984).

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

12508740 is a wasteful number, since it uses less digits than its factorization.

12508740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69508 (or 69503 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12508740 is about 3536.7697126050. The cubic root of 12508740 is about 232.1335190608.

The spelling of 12508740 in words is "twelve million, five hundred eight thousand, seven hundred forty".