16247990 has 16 divisors (see below), whose sum is σ = 31905360. Its totient is φ = 5908320.

The previous prime is 16247977. The next prime is 16247993. The reversal of 16247990 is 9974261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16247993) 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 in 7 ways as a sum of consecutive naturals, for example, 73745 + ... + 73964.

It is an arithmetic number, because the mean of its divisors is an integer number (1994085).

Almost surely, 2^16247990 is an apocalyptic number.

16247990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16247990 is a deficient number, since it is larger than the sum of its proper divisors (15657370).

16247990 is a wasteful number, since it uses less digits than its factorization.

16247990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147727.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 16247990 is about 4030.8795566228. The cubic root of 16247990 is about 253.2794071890.

The spelling of 16247990 in words is "sixteen million, two hundred forty-seven thousand, nine hundred ninety".