11509970 has 16 divisors (see below), whose sum is σ = 20758680. Its totient is φ = 4594944.

The previous prime is 11509963. The next prime is 11509973. The reversal of 11509970 is 7990511.

11509970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4661281 + 6848689 = 2159^2 + 2617^2 .

It is not an unprimeable number, because it can be changed into a prime (11509973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6986 + ... + 8474.

Almost surely, 2^11509970 is an apocalyptic number.

11509970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11509970 is a deficient number, since it is larger than the sum of its proper divisors (9248710).

11509970 is a wasteful number, since it uses less digits than its factorization.

11509970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 11509970 is about 3392.6346693978. The cubic root of 11509970 is about 225.7830821262.

The spelling of 11509970 in words is "eleven million, five hundred nine thousand, nine hundred seventy".