23779998 has 48 divisors (see below), whose sum is σ = 56923776. Its totient is φ = 7114320.

The previous prime is 23779997. The next prime is 23780017. The reversal of 23779998 is 89997732.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23779997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15711 + ... + 17157.

It is an arithmetic number, because the mean of its divisors is an integer number (1185912).

Almost surely, 2^23779998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23779998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28461888).

23779998 is an abundant number, since it is smaller than the sum of its proper divisors (33143778).

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

23779998 is a wasteful number, since it uses less digits than its factorization.

23779998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1546 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 23779998 is about 4876.4739310284. The cubic root of 23779998 is about 287.5658243736.

The spelling of 23779998 in words is "twenty-three million, seven hundred seventy-nine thousand, nine hundred ninety-eight".