16416540 has 192 divisors, whose sum is σ = 60318720. Its totient is φ = 3628800.

The previous prime is 16416511. The next prime is 16416553. The reversal of 16416540 is 4561461.

16416540 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 654 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162490 + ... + 162590.

It is an arithmetic number, because the mean of its divisors is an integer number (314160).

Almost surely, 2^16416540 is an apocalyptic number.

16416540 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 16416540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30159360).

16416540 is an abundant number, since it is smaller than the sum of its proper divisors (43902180).

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

16416540 is a wasteful number, since it uses less digits than its factorization.

16416540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16416540 is about 4051.7329625729. The cubic root of 16416540 is about 254.1522017508.

The spelling of 16416540 in words is "sixteen million, four hundred sixteen thousand, five hundred forty".