11154990 has 96 divisors (see below), whose sum is σ = 33707520. Its totient is φ = 2312640.

The previous prime is 11154989. The next prime is 11154991. The reversal of 11154990 is 9945111.

11154990 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 (11154989) and next prime (11154991).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11154991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25191 + ... + 25629.

It is an arithmetic number, because the mean of its divisors is an integer number (351120).

Almost surely, 2^11154990 is an apocalyptic number.

11154990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11154990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16853760).

11154990 is an abundant number, since it is smaller than the sum of its proper divisors (22552530).

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

11154990 is a wasteful number, since it uses less digits than its factorization.

11154990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 11154990 is about 3339.9086813864. The cubic root of 11154990 is about 223.4376706113.

It can be divided in two parts, 1115 and 4990, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 11154990 in words is "eleven million, one hundred fifty-four thousand, nine hundred ninety".