16421052 has 24 divisors (see below), whose sum is σ = 38779776. Its totient is φ = 5407408.

The previous prime is 16421039. The next prime is 16421063. The reversal of 16421052 is 25012461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7248 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (1615824).

Almost surely, 2^16421052 is an apocalyptic number.

16421052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16421052 is an abundant number, since it is smaller than the sum of its proper divisors (22358724).

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

16421052 is a wasteful number, since it uses less digits than its factorization.

16421052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16577 (or 16575 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 16421052 is about 4052.2897231072. The cubic root of 16421052 is about 254.1754837516.

The spelling of 16421052 in words is "sixteen million, four hundred twenty-one thousand, fifty-two".