11951028 has 18 divisors (see below), whose sum is σ = 30209634. Its totient is φ = 3983664.

The previous prime is 11951011. The next prime is 11951047. The reversal of 11951028 is 82015911.

It can be written as a sum of positive squares in only one way, i.e., 11370384 + 580644 = 3372^2 + 762^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 11950992 and 11951010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165951 + ... + 166022.

It is an arithmetic number, because the mean of its divisors is an integer number (1678313).

Almost surely, 2^11951028 is an apocalyptic number.

11951028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11951028 is an abundant number, since it is smaller than the sum of its proper divisors (18258606).

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

11951028 is a wasteful number, since it uses less digits than its factorization.

11951028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331983 (or 331978 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 11951028 is about 3457.0258894026. The cubic root of 11951028 is about 228.6309852990.

Adding to 11951028 its reverse (82015911), we get a palindrome (93966939).

The spelling of 11951028 in words is "eleven million, nine hundred fifty-one thousand, twenty-eight".