16252420 has 24 divisors (see below), whose sum is σ = 34234200. Its totient is φ = 6481152.

The previous prime is 16252403. The next prime is 16252427. The reversal of 16252420 is 2425261.

It can be written as a sum of positive squares in 4 ways, for example, as 2458624 + 13793796 = 1568^2 + 3714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16252391 and 16252400.

It is not an unprimeable number, because it can be changed into a prime (16252427) 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, 6736 + ... + 8824.

It is an arithmetic number, because the mean of its divisors is an integer number (1426425).

Almost surely, 2^16252420 is an apocalyptic number.

16252420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16252420 is an abundant number, since it is smaller than the sum of its proper divisors (17981780).

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

16252420 is a wasteful number, since it uses less digits than its factorization.

16252420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487 (or 2485 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 16252420 is about 4031.4290270325. The cubic root of 16252420 is about 253.3024238989.

Adding to 16252420 its reverse (2425261), we get a palindrome (18677681).

The spelling of 16252420 in words is "sixteen million, two hundred fifty-two thousand, four hundred twenty".