23416040 has 32 divisors (see below), whose sum is σ = 53083080. Its totient is φ = 9295872.

The previous prime is 23416039. The next prime is 23416049. The reversal of 23416040 is 4061432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17255716 + 6160324 = 4154^2 + 2482^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23416049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3344 + ... + 7616.

Almost surely, 2^23416040 is an apocalyptic number.

23416040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23416040 is an abundant number, since it is smaller than the sum of its proper divisors (29667040).

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

23416040 is a wasteful number, since it uses less digits than its factorization.

23416040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421 (or 4417 counting only the distinct ones).

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

The square root of 23416040 is about 4839.0122959133. The cubic root of 23416040 is about 286.0911897260.

Adding to 23416040 its reverse (4061432), we get a palindrome (27477472).

The spelling of 23416040 in words is "twenty-three million, four hundred sixteen thousand, forty".