1022065408 has 144 divisors (see below), whose sum is σ = 2549571136. Its totient is φ = 398131200.

The previous prime is 1022065399. The next prime is 1022065411. The reversal of 1022065408 is 8045602201.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700308 + ... + 1700908.

Almost surely, 2^1022065408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022065408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274785568).

1022065408 is an abundant number, since it is smaller than the sum of its proper divisors (1527505728).

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

1022065408 is an equidigital number, since it uses as much as digits as its factorization.

1022065408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1022065408 is about 31969.7577094353. The cubic root of 1022065408 is about 1007.3016915382.

Adding to 1022065408 its reverse (8045602201), we get a palindrome (9067667609).

The spelling of 1022065408 in words is "one billion, twenty-two million, sixty-five thousand, four hundred eight".