23781054 has 32 divisors (see below), whose sum is σ = 52554240. Its totient is φ = 7113600.

The previous prime is 23781049. The next prime is 23781059. The reversal of 23781054 is 45018732.

It is an interprime number because it is at equal distance from previous prime (23781049) and next prime (23781059).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23781059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2934 + ... + 7494.

It is an arithmetic number, because the mean of its divisors is an integer number (1642320).

Almost surely, 2^23781054 is an apocalyptic number.

23781054 is the 2607-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23781054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26277120).

23781054 is an abundant number, since it is smaller than the sum of its proper divisors (28773186).

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

23781054 is a wasteful number, since it uses less digits than its factorization.

23781054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 23781054 is about 4876.5822047824. The cubic root of 23781054 is about 287.5700809623.

Adding to 23781054 its reverse (45018732), we get a palindrome (68799786).

The spelling of 23781054 in words is "twenty-three million, seven hundred eighty-one thousand, fifty-four".