828740 has 24 divisors (see below), whose sum is σ = 1899072. Its totient is φ = 301280.

The previous prime is 828731. The next prime is 828743. The reversal of 828740 is 47828.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (828743) 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, 1664 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (79128).

2⁸²⁸⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

828740 is an abundant number, since it is smaller than the sum of its proper divisors (1070332).

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

828740 is a wasteful number, since it uses less digits than its factorization.

828740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787 (or 3785 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 828740 is about 910.3515804347. The cubic root of 828740 is about 93.9303845510.

The spelling of 828740 in words is "eight hundred twenty-eight thousand, seven hundred forty".