1622742 has 32 divisors (see below), whose sum is σ = 3697920. Its totient is φ = 469920.

The previous prime is 1622729. The next prime is 1622743. The reversal of 1622742 is 2472261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622743) 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, 984 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (115560).

2^1622742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1622742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848960).

1622742 is an abundant number, since it is smaller than the sum of its proper divisors (2075178).

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

1622742 is a wasteful number, since it uses less digits than its factorization.

1622742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its digits is 1344, while the sum is 24.

The square root of 1622742 is about 1273.8689100531. The cubic root of 1622742 is about 117.5122546446.

The spelling of 1622742 in words is "one million, six hundred twenty-two thousand, seven hundred forty-two".