16234402 has 4 divisors (see below), whose sum is σ = 24351606. Its totient is φ = 8117200.

The previous prime is 16234399. The next prime is 16234409. The reversal of 16234402 is 20443261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20443261 = 47 ⋅434963.

It can be written as a sum of positive squares in only one way, i.e., 8231161 + 8003241 = 2869^2 + 2829^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16234409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058599 + ... + 4058602.

Almost surely, 2^16234402 is an apocalyptic number.

16234402 is a deficient number, since it is larger than the sum of its proper divisors (8117204).

16234402 is an equidigital number, since it uses as much as digits as its factorization.

16234402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8117203.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 16234402 is about 4029.1937158692. The cubic root of 16234402 is about 253.2087826500.

Adding to 16234402 its reverse (20443261), we get a palindrome (36677663).

The spelling of 16234402 in words is "sixteen million, two hundred thirty-four thousand, four hundred two".