23990616 has 144 divisors (see below), whose sum is σ = 74889360. Its totient is φ = 6894720.

The previous prime is 23990611. The next prime is 23990651. The reversal of 23990616 is 61609932.

23990616 is a `hidden beast` number, since 2 + 39 + 9 + 0 + 616 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23990611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 337861 + ... + 337931.

It is an arithmetic number, because the mean of its divisors is an integer number (520065).

Almost surely, 2^23990616 is an apocalyptic number.

23990616 is a gapful number since it is divisible by the number (26) 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 23990616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37444680).

23990616 is an abundant number, since it is smaller than the sum of its proper divisors (50898744).

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

23990616 is a wasteful number, since it uses less digits than its factorization.

23990616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 23990616 is about 4898.0216414385. The cubic root of 23990616 is about 288.4123145218.

The spelling of 23990616 in words is "twenty-three million, nine hundred ninety thousand, six hundred sixteen".