1022620 has 12 divisors (see below), whose sum is σ = 2147544. Its totient is φ = 409040.

The previous prime is 1022611. The next prime is 1022629. The reversal of 1022620 is 262201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1022611) and next prime (1022629).

It is a self number, because there is not a number n which added to its sum of digits gives 1022620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022629) 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, 25546 + ... + 25585.

It is an arithmetic number, because the mean of its divisors is an integer number (178962).

2^1022620 is an apocalyptic number.

1022620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022620 is an abundant number, since it is smaller than the sum of its proper divisors (1124924).

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

1022620 is a wasteful number, since it uses less digits than its factorization.

1022620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51140 (or 51138 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1022620 is about 1011.2467552482. The cubic root of 1022620 is about 100.7483852237.

Adding to 1022620 its reverse (262201), we get a palindrome (1284821).

The spelling of 1022620 in words is "one million, twenty-two thousand, six hundred twenty".