16280390 has 32 divisors (see below), whose sum is σ = 35463744. Its totient is φ = 5253120.

The previous prime is 16280353. The next prime is 16280393. The reversal of 16280390 is 9308261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16280393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5651 + ... + 8030.

It is an arithmetic number, because the mean of its divisors is an integer number (1108242).

Almost surely, 2^16280390 is an apocalyptic number.

16280390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16280390 is an abundant number, since it is smaller than the sum of its proper divisors (19183354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16280390 is a wasteful number, since it uses less digits than its factorization.

16280390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13712.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 16280390 is about 4034.8965290327. The cubic root of 16280390 is about 253.4476496229.

The spelling of 16280390 in words is "sixteen million, two hundred eighty thousand, three hundred ninety".