1630274 has 8 divisors (see below), whose sum is σ = 2452620. Its totient is φ = 812736.

The previous prime is 1630273. The next prime is 1630303. The reversal of 1630274 is 4720361.

It can be written as a sum of positive squares in 2 ways, for example, as 1423249 + 207025 = 1193^2 + 455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1630273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 1814.

2^1630274 is an apocalyptic number.

1630274 is a deficient number, since it is larger than the sum of its proper divisors (822346).

1630274 is a wasteful number, since it uses less digits than its factorization.

1630274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1630274 is about 1276.8218356529. The cubic root of 1630274 is about 117.6937861540.

The spelling of 1630274 in words is "one million, six hundred thirty thousand, two hundred seventy-four".