16040807 has 4 divisors (see below), whose sum is σ = 16885080. Its totient is φ = 15196536.

The previous prime is 16040803. The next prime is 16040831. The reversal of 16040807 is 70804061.

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

It is a cyclic number.

It is not a de Polignac number, because 16040807 - 2² = 16040803 is a prime.

It is a super-2 number, since 2×16040807² = 514614978422498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040803) 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, 422108 + ... + 422145.

It is an arithmetic number, because the mean of its divisors is an integer number (4221270).

Almost surely, 2^16040807 is an apocalyptic number.

16040807 is a deficient number, since it is larger than the sum of its proper divisors (844273).

16040807 is an equidigital number, since it uses as much as digits as its factorization.

16040807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844272.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 16040807 is about 4005.0976267752. The cubic root of 16040807 is about 252.1982514417.

Adding to 16040807 its reverse (70804061), we get a palindrome (86844868).

The spelling of 16040807 in words is "sixteen million, forty thousand, eight hundred seven".