16840554 has 16 divisors (see below), whose sum is σ = 35145792. Its totient is φ = 5369408.

The previous prime is 16840519. The next prime is 16840559. The reversal of 16840554 is 45504861.

It is not an unprimeable number, because it can be changed into a prime (16840559) 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, 60879 + ... + 61154.

It is an arithmetic number, because the mean of its divisors is an integer number (2196612).

Almost surely, 2^16840554 is an apocalyptic number.

16840554 is an abundant number, since it is smaller than the sum of its proper divisors (18305238).

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

16840554 is a wasteful number, since it uses less digits than its factorization.

16840554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122061.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 16840554 is about 4103.7244059513. The cubic root of 16840554 is about 256.3217491729.

The spelling of 16840554 in words is "sixteen million, eight hundred forty thousand, five hundred fifty-four".