23003400440 has 64 divisors (see below), whose sum is σ = 52323723360. Its totient is φ = 9100915200.

The previous prime is 23003400421. The next prime is 23003400461. The reversal of 23003400440 is 4400430032.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4995179 + ... + 4999781.

Almost surely, 2^23003400440 is an apocalyptic number.

23003400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23003400440 is an abundant number, since it is smaller than the sum of its proper divisors (29320322920).

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

23003400440 is a wasteful number, since it uses less digits than its factorization.

23003400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952 (or 5948 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 23003400440 its reverse (4400430032), we get a palindrome (27403830472).

The spelling of 23003400440 in words is "twenty-three billion, three million, four hundred thousand, four hundred forty".