16920554 has 16 divisors (see below), whose sum is σ = 29069376. Its totient is φ = 7236000.

The previous prime is 16920539. The next prime is 16920569. The reversal of 16920554 is 45502961.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16920539) and next prime (16920569).

It is a super-3 number, since 3×16920554³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16920554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7409 + ... + 9419.

It is an arithmetic number, because the mean of its divisors is an integer number (1816836).

Almost surely, 2^16920554 is an apocalyptic number.

16920554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16920554 is a deficient number, since it is larger than the sum of its proper divisors (12148822).

16920554 is a wasteful number, since it uses less digits than its factorization.

16920554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 16920554 is about 4113.4601006938. The cubic root of 16920554 is about 256.7269883146.

The spelling of 16920554 in words is "sixteen million, nine hundred twenty thousand, five hundred fifty-four".