16249240 has 64 divisors (see below), whose sum is σ = 42197760. Its totient is φ = 5516160.

The previous prime is 16249223. The next prime is 16249271. The reversal of 16249240 is 4294261.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 16249199 and 16249208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36459 + ... + 36901.

It is an arithmetic number, because the mean of its divisors is an integer number (659340).

Almost surely, 2^16249240 is an apocalyptic number.

16249240 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 16249240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21098880).

16249240 is an abundant number, since it is smaller than the sum of its proper divisors (25948520).

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

16249240 is a wasteful number, since it uses less digits than its factorization.

16249240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 16249240 is about 4031.0346066488. The cubic root of 16249240 is about 253.2859021697.

The spelling of 16249240 in words is "sixteen million, two hundred forty-nine thousand, two hundred forty".