16103820 has 48 divisors (see below), whose sum is σ = 45319680. Its totient is φ = 4272576.

The previous prime is 16103819. The next prime is 16103827. The reversal of 16103820 is 2830161.

It is not an unprimeable number, because it can be changed into a prime (16103827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13779 + ... + 14901.

It is an arithmetic number, because the mean of its divisors is an integer number (944160).

Almost surely, 2^16103820 is an apocalyptic number.

16103820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16103820 is an abundant number, since it is smaller than the sum of its proper divisors (29215860).

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

16103820 is a wasteful number, since it uses less digits than its factorization.

16103820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16103820 is about 4012.9565160864. The cubic root of 16103820 is about 252.5280562230.

Adding to 16103820 its reverse (2830161), we get a palindrome (18933981).

The spelling of 16103820 in words is "sixteen million, one hundred three thousand, eight hundred twenty".