11219420 has 24 divisors (see below), whose sum is σ = 23895648. Its totient is φ = 4424000.

The previous prime is 11219419. The next prime is 11219437. The reversal of 11219420 is 2491211.

11219420 is nontrivially palindromic in base 9.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11219392 and 11219401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2531 + ... + 5370.

It is an arithmetic number, because the mean of its divisors is an integer number (995652).

Almost surely, 2^11219420 is an apocalyptic number.

11219420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11219420 is an abundant number, since it is smaller than the sum of its proper divisors (12676228).

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

11219420 is a wasteful number, since it uses less digits than its factorization.

11219420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7981 (or 7979 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11219420 is about 3349.5402669620. The cubic root of 11219420 is about 223.8670288618.

The spelling of 11219420 in words is "eleven million, two hundred nineteen thousand, four hundred twenty".