1516428 has 48 divisors (see below), whose sum is σ = 4144000. Its totient is φ = 478224.

The previous prime is 1516421. The next prime is 1516433. The reversal of 1516428 is 8246151.

1516428 is a `hidden beast` number, since 15 + 1 + 642 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1516421) 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, 1683 + ... + 2421.

2^1516428 is an apocalyptic number.

1516428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1516428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2072000).

1516428 is an abundant number, since it is smaller than the sum of its proper divisors (2627572).

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

1516428 is a wasteful number, since it uses less digits than its factorization.

1516428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 763 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1516428 is about 1231.4333112272. The cubic root of 1516428 is about 114.8878048807.

The spelling of 1516428 in words is "one million, five hundred sixteen thousand, four hundred twenty-eight".