1662928 has 30 divisors (see below), whose sum is σ = 3372614. Its totient is φ = 793728.

The previous prime is 1662901. The next prime is 1662929. The reversal of 1662928 is 8292661.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 937024 + 725904 = 968^2 + 852^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1662893 and 1662902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31350 + ... + 31402.

2^1662928 is an apocalyptic number.

It is an amenable number.

1662928 is an abundant number, since it is smaller than the sum of its proper divisors (1709686).

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

1662928 is an equidigital number, since it uses as much as digits as its factorization.

1662928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 92 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 1662928 is about 1289.5456564232. The cubic root of 1662928 is about 118.4743901881.

The spelling of 1662928 in words is "one million, six hundred sixty-two thousand, nine hundred twenty-eight".