16261428 has 12 divisors (see below), whose sum is σ = 37943360. Its totient is φ = 5420472.

The previous prime is 16261411. The next prime is 16261447. The reversal of 16261428 is 82416261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16261395 and 16261404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677548 + ... + 677571.

Almost surely, 2^16261428 is an apocalyptic number.

It is an amenable number.

16261428 is an abundant number, since it is smaller than the sum of its proper divisors (21681932).

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

16261428 is a wasteful number, since it uses less digits than its factorization.

16261428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355126 (or 1355124 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 16261428 is about 4032.5460939709. The cubic root of 16261428 is about 253.3492133782.

Adding to 16261428 its reverse (82416261), we get a palindrome (98677689).

The spelling of 16261428 in words is "sixteen million, two hundred sixty-one thousand, four hundred twenty-eight".