1628474 has 4 divisors (see below), whose sum is σ = 2442714. Its totient is φ = 814236.

The previous prime is 1628467. The next prime is 1628477. The reversal of 1628474 is 4748261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 511225 = 1057^2 + 715^2 .

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1628474.

It is not an unprimeable number, because it can be changed into a prime (1628477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407117 + ... + 407120.

2^1628474 is an apocalyptic number.

1628474 is a deficient number, since it is larger than the sum of its proper divisors (814240).

1628474 is an equidigital number, since it uses as much as digits as its factorization.

1628474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814239.

The product of its digits is 10752, while the sum is 32.

The square root of 1628474 is about 1276.1167658173. The cubic root of 1628474 is about 117.6504546177.

The spelling of 1628474 in words is "one million, six hundred twenty-eight thousand, four hundred seventy-four".