1022730 has 32 divisors (see below), whose sum is σ = 2493504. Its totient is φ = 268416.

The previous prime is 1022729. The next prime is 1022761. The reversal of 1022730 is 372201.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 1957 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (77922).

2^1022730 is an apocalyptic number.

1022730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246752).

1022730 is an abundant number, since it is smaller than the sum of its proper divisors (1470774).

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

1022730 is a wasteful number, since it uses less digits than its factorization.

1022730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 1022730 is about 1011.3011420937. The cubic root of 1022730 is about 100.7519974893.

Adding to 1022730 its reverse (372201), we get a palindrome (1394931).

The spelling of 1022730 in words is "one million, twenty-two thousand, seven hundred thirty".