1621022 has 8 divisors (see below), whose sum is σ = 2618616. Its totient is φ = 748152.

The previous prime is 1621019. The next prime is 1621031. The reversal of 1621022 is 2201261.

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

It is a junction number, because it is equal to n+sod(n) for n = 1620988 and 1621006.

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 in 3 ways as a sum of consecutive naturals, for example, 31148 + ... + 31199.

It is an arithmetic number, because the mean of its divisors is an integer number (327327).

2^1621022 is an apocalyptic number.

1621022 is a deficient number, since it is larger than the sum of its proper divisors (997594).

1621022 is a wasteful number, since it uses less digits than its factorization.

1621022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62362.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1621022 is about 1273.1936223529. The cubic root of 1621022 is about 117.4707215416.

Adding to 1621022 its reverse (2201261), we get a palindrome (3822283).

The spelling of 1621022 in words is "one million, six hundred twenty-one thousand, twenty-two".