16051920 has 40 divisors (see below), whose sum is σ = 49761696. Its totient is φ = 4280448.

The previous prime is 16051909. The next prime is 16051921. The reversal of 16051920 is 2915061.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16051921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33202 + ... + 33681.

Almost surely, 2^16051920 is an apocalyptic number.

16051920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16051920 is an abundant number, since it is smaller than the sum of its proper divisors (33709776).

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

16051920 is a wasteful number, since it uses less digits than its factorization.

16051920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66899 (or 66893 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 16051920 is about 4006.4847435127. The cubic root of 16051920 is about 252.2564786076.

Adding to 16051920 its reverse (2915061), we get a palindrome (18966981).

The spelling of 16051920 in words is "sixteen million, fifty-one thousand, nine hundred twenty".