16308240 has 80 divisors (see below), whose sum is σ = 54454848. Its totient is φ = 4013568.

The previous prime is 16308233. The next prime is 16308241. The reversal of 16308240 is 4280361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16308240.

It is not an unprimeable number, because it can be changed into a prime (16308241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507 + ... + 5733.

Almost surely, 2^16308240 is an apocalyptic number.

16308240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16308240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27227424).

16308240 is an abundant number, since it is smaller than the sum of its proper divisors (38146608).

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

16308240 is a wasteful number, since it uses less digits than its factorization.

16308240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5256 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 16308240 is about 4038.3461961551. The cubic root of 16308240 is about 253.5920871126.

It can be divided in two parts, 1630 and 8240, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 16308240 in words is "sixteen million, three hundred eight thousand, two hundred forty".