16345402 has 4 divisors (see below), whose sum is σ = 24518106. Its totient is φ = 8172700.

The previous prime is 16345369. The next prime is 16345403. The reversal of 16345402 is 20454361.

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., 13845841 + 2499561 = 3721^2 + 1581^2 .

It is not an unprimeable number, because it can be changed into a prime (16345403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4086349 + ... + 4086352.

Almost surely, 2^16345402 is an apocalyptic number.

16345402 is a deficient number, since it is larger than the sum of its proper divisors (8172704).

16345402 is an equidigital number, since it uses as much as digits as its factorization.

16345402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172703.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 16345402 is about 4042.9447188899. The cubic root of 16345402 is about 253.7845632261.

Adding to 16345402 its reverse (20454361), we get a palindrome (36799763).

The spelling of 16345402 in words is "sixteen million, three hundred forty-five thousand, four hundred two".