16389552 has 40 divisors (see below), whose sum is σ = 44570560. Its totient is φ = 5175360.

The previous prime is 16389539. The next prime is 16389563. The reversal of 16389552 is 25598361.

16389552 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 self number, because there is not a number n which added to its sum of digits gives 16389552.

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, 8074 + ... + 9897.

It is an arithmetic number, because the mean of its divisors is an integer number (1114264).

Almost surely, 2^16389552 is an apocalyptic number.

16389552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16389552 is an abundant number, since it is smaller than the sum of its proper divisors (28181008).

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

16389552 is a wasteful number, since it uses less digits than its factorization.

16389552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18001 (or 17995 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 16389552 is about 4048.4011658925. The cubic root of 16389552 is about 254.0128540419.

The spelling of 16389552 in words is "sixteen million, three hundred eighty-nine thousand, five hundred fifty-two".