1622940 has 48 divisors (see below), whose sum is σ = 4959360. Its totient is φ = 393280.

The previous prime is 1622917. The next prime is 1622947. The reversal of 1622940 is 492261.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1622940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570 + ... + 1889.

It is an arithmetic number, because the mean of its divisors is an integer number (103320).

2^1622940 is an apocalyptic number.

1622940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622940 is an abundant number, since it is smaller than the sum of its proper divisors (3336420).

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

1622940 is a wasteful number, since it uses less digits than its factorization.

1622940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1622940 is about 1273.9466236856. The cubic root of 1622940 is about 117.5170338969.

The spelling of 1622940 in words is "one million, six hundred twenty-two thousand, nine hundred forty".