1621952 has 14 divisors (see below), whose sum is σ = 3218688. Its totient is φ = 810944.

The previous prime is 1621933. The next prime is 1621979. The reversal of 1621952 is 2591261.

It is a congruent number.

It is an unprimeable number.

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, 12608 + ... + 12735.

2^1621952 is an apocalyptic number.

It is an amenable number.

1621952 is a deficient number, since it is larger than the sum of its proper divisors (1596736).

1621952 is an equidigital number, since it uses as much as digits as its factorization.

1621952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25355 (or 25345 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 1621952 is about 1273.5587933032. The cubic root of 1621952 is about 117.4931820399.

The spelling of 1621952 in words is "one million, six hundred twenty-one thousand, nine hundred fifty-two".