23780000 has 120 divisors (see below), whose sum is σ = 61995780. Its totient is φ = 8960000.

The previous prime is 23779997. The next prime is 23780017. The reversal of 23780000 is 8732.

It can be written as a sum of positive squares in 10 ways, for example, as 6574096 + 17205904 = 2564^2 + 4148^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 579980 + ... + 580020.

Almost surely, 2^23780000 is an apocalyptic number.

23780000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23780000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30997890).

23780000 is an abundant number, since it is smaller than the sum of its proper divisors (38215780).

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

23780000 is an equidigital number, since it uses as much as digits as its factorization.

23780000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 23780000 is about 4876.4741360946. The cubic root of 23780000 is about 287.5658324354.

Adding to 23780000 its reverse (8732), we get a palindrome (23788732).

The spelling of 23780000 in words is "twenty-three million, seven hundred eighty thousand".