16700402 has 4 divisors (see below), whose sum is σ = 25050606. Its totient is φ = 8350200.

The previous prime is 16700401. The next prime is 16700417. The reversal of 16700402 is 20400761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20400761 = 131 ⋅155731.

It can be written as a sum of positive squares in only one way, i.e., 16556761 + 143641 = 4069^2 + 379^2 .

It is not an unprimeable number, because it can be changed into a prime (16700401) 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 as a sum of consecutive naturals, namely, 4175099 + ... + 4175102.

Almost surely, 2^16700402 is an apocalyptic number.

16700402 is a deficient number, since it is larger than the sum of its proper divisors (8350204).

16700402 is an equidigital number, since it uses as much as digits as its factorization.

16700402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350203.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 16700402 is about 4086.6125336273. The cubic root of 16700402 is about 255.6087060072.

The spelling of 16700402 in words is "sixteen million, seven hundred thousand, four hundred two".