11023430420 has 24 divisors (see below), whose sum is σ = 23183629224. Its totient is φ = 4402814976.

The previous prime is 11023430419. The next prime is 11023430459. The reversal of 11023430420 is 2403432011.

It can be written as a sum of positive squares in 4 ways, for example, as 94400656 + 10929029764 = 9716^2 + 104542^2 .

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 = 11023430392 and 11023430401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396029 + ... + 422948.

It is an arithmetic number, because the mean of its divisors is an integer number (965984551).

Almost surely, 2^11023430420 is an apocalyptic number.

11023430420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11023430420 is an abundant number, since it is smaller than the sum of its proper divisors (12160198804).

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

11023430420 is a wasteful number, since it uses less digits than its factorization.

11023430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819659 (or 819657 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 11023430420 its reverse (2403432011), we get a palindrome (13426862431).

The spelling of 11023430420 in words is "eleven billion, twenty-three million, four hundred thirty thousand, four hundred twenty".