1621446 has 8 divisors (see below), whose sum is σ = 3242904. Its totient is φ = 540480.

The previous prime is 1621439. The next prime is 1621457. The reversal of 1621446 is 6441261.

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

1621446 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135115 + ... + 135126.

It is an arithmetic number, because the mean of its divisors is an integer number (405363).

2^1621446 is an apocalyptic number.

1621446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1621446 is a wasteful number, since it uses less digits than its factorization.

1621446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270246.

The product of its digits is 1152, while the sum is 24.

The square root of 1621446 is about 1273.3601218823. The cubic root of 1621446 is about 117.4809626619.

The spelling of 1621446 in words is "one million, six hundred twenty-one thousand, four hundred forty-six".