16213970 has 8 divisors (see below), whose sum is σ = 29185164. Its totient is φ = 6485584.

The previous prime is 16213969. The next prime is 16213979. The reversal of 16213970 is 7931261.

It can be written as a sum of positive squares in 2 ways, for example, as 15594601 + 619369 = 3949^2 + 787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16213979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810689 + ... + 810708.

Almost surely, 2^16213970 is an apocalyptic number.

16213970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16213970 is a deficient number, since it is larger than the sum of its proper divisors (12971194).

16213970 is a wasteful number, since it uses less digits than its factorization.

16213970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621404.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 16213970 is about 4026.6574227267. The cubic root of 16213970 is about 253.1025117450.

The spelling of 16213970 in words is "sixteen million, two hundred thirteen thousand, nine hundred seventy".