11151420 has 72 divisors (see below), whose sum is σ = 36331344. Its totient is φ = 2548224.

The previous prime is 11151419. The next prime is 11151421. The reversal of 11151420 is 2415111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11151419) and next prime (11151421).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11151420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11151421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1044 + ... + 4836.

It is an arithmetic number, because the mean of its divisors is an integer number (504602).

Almost surely, 2^11151420 is an apocalyptic number.

11151420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11151420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18165672).

11151420 is an abundant number, since it is smaller than the sum of its proper divisors (25179924).

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

11151420 is a wasteful number, since it uses less digits than its factorization.

11151420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819 (or 3810 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 11151420 is about 3339.3741928691. The cubic root of 11151420 is about 223.4138320245.

Adding to 11151420 its reverse (2415111), we get a palindrome (13566531).

The spelling of 11151420 in words is "eleven million, one hundred fifty-one thousand, four hundred twenty".