16409028 has 24 divisors (see below), whose sum is σ = 39953088. Its totient is φ = 5231776.

The previous prime is 16408999. The next prime is 16409039. The reversal of 16409028 is 82090461.

16409028 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16408986 and 16409004.

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, 29451 + ... + 30002.

It is an arithmetic number, because the mean of its divisors is an integer number (1664712).

Almost surely, 2^16409028 is an apocalyptic number.

It is an amenable number.

16409028 is an abundant number, since it is smaller than the sum of its proper divisors (23544060).

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

16409028 is a wasteful number, since it uses less digits than its factorization.

16409028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59483 (or 59481 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 16409028 is about 4050.8058457546. The cubic root of 16409028 is about 254.1134302309.

Adding to 16409028 its reverse (82090461), we get a palindrome (98499489).

The spelling of 16409028 in words is "sixteen million, four hundred nine thousand, twenty-eight".