1022403240 has 96 divisors (see below), whose sum is σ = 3412660680. Its totient is φ = 265268736.

The previous prime is 1022403209. The next prime is 1022403287. The reversal of 1022403240 is 423042201.

1022403240 is a `hidden beast` number, since 1 + 0 + 22 + 403 + 240 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1022336676 + 66564 = 31974^2 + 258^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25059 + ... + 51698.

Almost surely, 2^1022403240 is an apocalyptic number.

1022403240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022403240 is an abundant number, since it is smaller than the sum of its proper divisors (2390257440).

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

1022403240 is a wasteful number, since it uses less digits than its factorization.

1022403240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76811 (or 76804 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1022403240 is about 31975.0408912952. The cubic root of 1022403240 is about 1007.4126633199.

Adding to 1022403240 its reverse (423042201), we get a palindrome (1445445441).

The spelling of 1022403240 in words is "one billion, twenty-two million, four hundred three thousand, two hundred forty".