16198540 has 24 divisors (see below), whose sum is σ = 34115760. Its totient is φ = 6460608.

The previous prime is 16198531. The next prime is 16198541. The reversal of 16198540 is 4589161.

It is a junction number, because it is equal to n+sod(n) for n = 16198496 and 16198505.

It is not an unprimeable number, because it can be changed into a prime (16198541) 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, 7414 + ... + 9346.

It is an arithmetic number, because the mean of its divisors is an integer number (1421490).

Almost surely, 2^16198540 is an apocalyptic number.

16198540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16198540 is an abundant number, since it is smaller than the sum of its proper divisors (17917220).

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

16198540 is a wasteful number, since it uses less digits than its factorization.

16198540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 16198540 is about 4024.7409854548. The cubic root of 16198540 is about 253.0221980554.

The spelling of 16198540 in words is "sixteen million, one hundred ninety-eight thousand, five hundred forty".