23451642 has 12 divisors (see below), whose sum is σ = 50811930. Its totient is φ = 7817208.

The previous prime is 23451613. The next prime is 23451647. The reversal of 23451642 is 24615432.

It can be written as a sum of positive squares in only one way, i.e., 23415921 + 35721 = 4839^2 + 189^2 .

It is not an unprimeable number, because it can be changed into a prime (23451647) 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 5 ways as a sum of consecutive naturals, for example, 651417 + ... + 651452.

Almost surely, 2^23451642 is an apocalyptic number.

23451642 is an abundant number, since it is smaller than the sum of its proper divisors (27360288).

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

23451642 is a wasteful number, since it uses less digits than its factorization.

23451642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302877 (or 1302874 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 23451642 is about 4842.6895419797. The cubic root of 23451642 is about 286.2361083500.

The spelling of 23451642 in words is "twenty-three million, four hundred fifty-one thousand, six hundred forty-two".