1022747040 has 384 divisors, whose sum is σ = 4226826240. Its totient is φ = 226022400.

The previous prime is 1022747021. The next prime is 1022747041. The reversal of 1022747040 is 407472201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1022746995 and 1022747013.

It is not an unprimeable number, because it can be changed into a prime (1022747041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 936895 + ... + 937985.

It is an arithmetic number, because the mean of its divisors is an integer number (11007360).

Almost surely, 2^1022747040 is an apocalyptic number.

1022747040 is a gapful number since it is divisible by the number (10) 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 1022747040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2113413120).

1022747040 is an abundant number, since it is smaller than the sum of its proper divisors (3204079200).

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

1022747040 is a wasteful number, since it uses less digits than its factorization.

1022747040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 1022747040 is about 31980.4165076067. The cubic root of 1022747040 is about 1007.5255703887.

The spelling of 1022747040 in words is "one billion, twenty-two million, seven hundred forty-seven thousand, forty".