11172340 has 24 divisors (see below), whose sum is σ = 23604840. Its totient is φ = 4441728.

The previous prime is 11172313. The next prime is 11172341. The reversal of 11172340 is 4327111.

It can be written as a sum of positive squares in 4 ways, for example, as 2196324 + 8976016 = 1482^2 + 2996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172341) 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, 1846 + ... + 5074.

It is an arithmetic number, because the mean of its divisors is an integer number (983535).

Almost surely, 2^11172340 is an apocalyptic number.

11172340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11172340 is an abundant number, since it is smaller than the sum of its proper divisors (12432500).

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

11172340 is a wasteful number, since it uses less digits than its factorization.

11172340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 11172340 is about 3342.5050486125. The cubic root of 11172340 is about 223.5534524412.

Adding to 11172340 its reverse (4327111), we get a palindrome (15499451).

The spelling of 11172340 in words is "eleven million, one hundred seventy-two thousand, three hundred forty".