11628551 has 8 divisors (see below), whose sum is σ = 13353600. Its totient is φ = 10014840.

The previous prime is 11628523. The next prime is 11628557. The reversal of 11628551 is 15582611.

11628551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11628551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11628557) 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, 27611 + ... + 28028.

It is an arithmetic number, because the mean of its divisors is an integer number (1669200).

Almost surely, 2^11628551 is an apocalyptic number.

11628551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11628551 is a deficient number, since it is larger than the sum of its proper divisors (1725049).

11628551 is a wasteful number, since it uses less digits than its factorization.

11628551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55669.

The product of its digits is 2400, while the sum is 29.

The square root of 11628551 is about 3410.0661283911. The cubic root of 11628551 is about 226.5558081987. Note that the first 3 decimals are identical.

The spelling of 11628551 in words is "eleven million, six hundred twenty-eight thousand, five hundred fifty-one".