16421352 has 32 divisors (see below), whose sum is σ = 41752800. Its totient is φ = 5380544.

The previous prime is 16421347. The next prime is 16421357. The reversal of 16421352 is 25312461.

It is an interprime number because it is at equal distance from previous prime (16421347) and next prime (16421357).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (16421357) by changing a digit.

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, 4383 + ... + 7214.

It is an arithmetic number, because the mean of its divisors is an integer number (1304775).

Almost surely, 2^16421352 is an apocalyptic number.

16421352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16421352 is an abundant number, since it is smaller than the sum of its proper divisors (25331448).

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

16421352 is a wasteful number, since it uses less digits than its factorization.

16421352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11665 (or 11661 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 16421352 is about 4052.3267390476. The cubic root of 16421352 is about 254.1770316057.

The spelling of 16421352 in words is "sixteen million, four hundred twenty-one thousand, three hundred fifty-two".