1022940 has 36 divisors (see below), whose sum is σ = 3103464. Its totient is φ = 272736.

The previous prime is 1022933. The next prime is 1022963. The reversal of 1022940 is 492201.

1022940 = 140² + 141² + ... + 179².

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2662 + ... + 3021.

2^1022940 is an apocalyptic number.

1022940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022940 is an abundant number, since it is smaller than the sum of its proper divisors (2080524).

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

1022940 is a wasteful number, since it uses less digits than its factorization.

1022940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698 (or 5693 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1022940 is about 1011.4049634049. The cubic root of 1022940 is about 100.7588929134.

The spelling of 1022940 in words is "one million, twenty-two thousand, nine hundred forty".