1022793408 has 504 divisors, whose sum is σ = 3867302400. Its totient is φ = 252315648.

The previous prime is 1022793403. The next prime is 1022793433. The reversal of 1022793408 is 8043972201.

It is a tau number, because it is divible by the number of its divisors (504).

It is a super-2 number, since 2×1022793408² = 2092212710896508928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1022793403) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12946713 + ... + 12946791.

Almost surely, 2^1022793408 is an apocalyptic number.

1022793408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022793408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1933651200).

1022793408 is an abundant number, since it is smaller than the sum of its proper divisors (2844508992).

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

1022793408 is a wasteful number, since it uses less digits than its factorization.

1022793408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1022793408 is about 31981.1414430442. The cubic root of 1022793408 is about 1007.5407961281.

It can be divided in two parts, 1022793 and 408, that added together give a palindrome (1023201).

The spelling of 1022793408 in words is "one billion, twenty-two million, seven hundred ninety-three thousand, four hundred eight".