11172680 has 16 divisors (see below), whose sum is σ = 25138620. Its totient is φ = 4469056.

The previous prime is 11172677. The next prime is 11172683. The reversal of 11172680 is 8627111.

11172680 = T₄₈₈ + T₄₈₉ + ... + T₅₆₇.

11172680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11172677) and next prime (11172683).

It can be written as a sum of positive squares in 2 ways, for example, as 9229444 + 1943236 = 3038^2 + 1394^2 .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11172683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139619 + ... + 139698.

Almost surely, 2^11172680 is an apocalyptic number.

11172680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11172680 is an abundant number, since it is smaller than the sum of its proper divisors (13965940).

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

11172680 is a wasteful number, since it uses less digits than its factorization.

11172680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279328 (or 279324 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 11172680 is about 3342.5559082834. Note that the first 3 decimals coincide. The cubic root of 11172680 is about 223.5557201668. Note that the first 3 decimals are identical.

Adding to 11172680 its reverse (8627111), we get a palindrome (19799791).

The spelling of 11172680 in words is "eleven million, one hundred seventy-two thousand, six hundred eighty".