23406223428 has 48 divisors (see below), whose sum is σ = 69351775360. Its totient is φ = 6687492192.

The previous prime is 23406223403. The next prime is 23406223429. The reversal of 23406223428 is 82432260432.

23406223428 is a `hidden beast` number, since 2 + 3 + 4 + 0 + 6 + 223 + 428 = 666.

It is a super-2 number, since 2×23406223428² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23406223392 and 23406223401.

It is not an unprimeable number, because it can be changed into a prime (23406223429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15479551 + ... + 15481062.

Almost surely, 2^23406223428 is an apocalyptic number.

23406223428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23406223428 is an abundant number, since it is smaller than the sum of its proper divisors (45945551932).

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

23406223428 is a wasteful number, since it uses less digits than its factorization.

23406223428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30960633 (or 30960625 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 23406223428 in words is "twenty-three billion, four hundred six million, two hundred twenty-three thousand, four hundred twenty-eight".