16290340 has 24 divisors (see below), whose sum is σ = 37320192. Its totient is φ = 5923680.

The previous prime is 16290331. The next prime is 16290347. The reversal of 16290340 is 4309261.

16290340 = 517² + 518² + ... + 571².

It is not an unprimeable number, because it can be changed into a prime (16290347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36804 + ... + 37243.

It is an arithmetic number, because the mean of its divisors is an integer number (1555008).

Almost surely, 2^16290340 is an apocalyptic number.

16290340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16290340 is an abundant number, since it is smaller than the sum of its proper divisors (21029852).

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

16290340 is a wasteful number, since it uses less digits than its factorization.

16290340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74067 (or 74065 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16290340 is about 4036.1293339040. The cubic root of 16290340 is about 253.4992718618.

The spelling of 16290340 in words is "sixteen million, two hundred ninety thousand, three hundred forty".