1540022 has 8 divisors (see below), whose sum is σ = 2520072. Its totient is φ = 700000.

The previous prime is 1540009. The next prime is 1540027. The reversal of 1540022 is 2200451.

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 = 1539979 and 1540006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34979 + ... + 35022.

It is an arithmetic number, because the mean of its divisors is an integer number (315009).

2^1540022 is an apocalyptic number.

1540022 is a deficient number, since it is larger than the sum of its proper divisors (980050).

1540022 is a wasteful number, since it uses less digits than its factorization.

1540022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70014.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1540022 is about 1240.9762286200. The cubic root of 1540022 is about 115.4805849315.

Adding to 1540022 its reverse (2200451), we get a palindrome (3740473).

The spelling of 1540022 in words is "one million, five hundred forty thousand, twenty-two".