16632442 has 4 divisors (see below), whose sum is σ = 24948666. Its totient is φ = 8316220.

The previous prime is 16632403. The next prime is 16632449. The reversal of 16632442 is 24423661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16410601 + 221841 = 4051^2 + 471^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16632442.

It is not an unprimeable number, because it can be changed into a prime (16632449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4158109 + ... + 4158112.

Almost surely, 2^16632442 is an apocalyptic number.

16632442 is a deficient number, since it is larger than the sum of its proper divisors (8316224).

16632442 is an equidigital number, since it uses as much as digits as its factorization.

16632442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316223.

The product of its digits is 6912, while the sum is 28.

The square root of 16632442 is about 4078.2891020623. The cubic root of 16632442 is about 255.2615130819.

The spelling of 16632442 in words is "sixteen million, six hundred thirty-two thousand, four hundred forty-two".