16540642 has 8 divisors (see below), whose sum is σ = 24868800. Its totient is φ = 8251044.

The previous prime is 16540633. The next prime is 16540661. The reversal of 16540642 is 24604561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16540642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8542 + ... + 10297.

It is an arithmetic number, because the mean of its divisors is an integer number (3108600).

Almost surely, 2^16540642 is an apocalyptic number.

16540642 is a deficient number, since it is larger than the sum of its proper divisors (8328158).

16540642 is a wasteful number, since it uses less digits than its factorization.

16540642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19280.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 16540642 is about 4067.0188098901. The cubic root of 16540642 is about 254.7910219155.

The spelling of 16540642 in words is "sixteen million, five hundred forty thousand, six hundred forty-two".