16153220 has 24 divisors (see below), whose sum is σ = 34000344. Its totient is φ = 6446336.

The previous prime is 16153219. The next prime is 16153229. The reversal of 16153220 is 2235161.

It can be written as a sum of positive squares in 4 ways, for example, as 6431296 + 9721924 = 2536^2 + 3118^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 16153192 and 16153201.

It is not an unprimeable number, because it can be changed into a prime (16153229) 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, 12944 + ... + 14136.

It is an arithmetic number, because the mean of its divisors is an integer number (1416681).

Almost surely, 2^16153220 is an apocalyptic number.

16153220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16153220 is an abundant number, since it is smaller than the sum of its proper divisors (17847124).

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

16153220 is a wasteful number, since it uses less digits than its factorization.

16153220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 16153220 is about 4019.1068659592. The cubic root of 16153220 is about 252.7860105822.

Adding to 16153220 its reverse (2235161), we get a palindrome (18388381).

The spelling of 16153220 in words is "sixteen million, one hundred fifty-three thousand, two hundred twenty".