23478378 has 64 divisors (see below), whose sum is σ = 59304960. Its totient is φ = 6019200.

The previous prime is 23478373. The next prime is 23478379. The reversal of 23478378 is 87387432.

23478378 is a nontrivial binomial coefficient, being equal to C(6853, 2).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (23478373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40833 + ... + 41403.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^23478378 is an apocalyptic number.

23478378 is the 6852-nd triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23478378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29652480).

23478378 is an abundant number, since it is smaller than the sum of its proper divisors (35826582).

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

23478378 is a wasteful number, since it uses less digits than its factorization.

23478378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its digits is 225792, while the sum is 42.

The square root of 23478378 is about 4845.4492051821. The cubic root of 23478378 is about 286.3448413510.

The spelling of 23478378 in words is "twenty-three million, four hundred seventy-eight thousand, three hundred seventy-eight".