16057994 has 4 divisors (see below), whose sum is σ = 24086994. Its totient is φ = 8028996.

The previous prime is 16057981. The next prime is 16057997. The reversal of 16057994 is 49975061.

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., 15960025 + 97969 = 3995^2 + 313^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16057997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4014497 + ... + 4014500.

Almost surely, 2^16057994 is an apocalyptic number.

16057994 is a deficient number, since it is larger than the sum of its proper divisors (8029000).

16057994 is an equidigital number, since it uses as much as digits as its factorization.

16057994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8028999.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 16057994 is about 4007.2426929249. The cubic root of 16057994 is about 252.2882923019.

The spelling of 16057994 in words is "sixteen million, fifty-seven thousand, nine hundred ninety-four".