1047345390 has 240 divisors, whose sum is σ = 3488319648. Its totient is φ = 220776192.

The previous prime is 1047345371. The next prime is 1047345391. The reversal of 1047345390 is 935437401.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047345391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 957684 + ... + 958776.

Almost surely, 2^1047345390 is an apocalyptic number.

1047345390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047345390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744159824).

1047345390 is an abundant number, since it is smaller than the sum of its proper divisors (2440974258).

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

1047345390 is a wasteful number, since it uses less digits than its factorization.

1047345390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1047345390 is about 32362.7160479463. The cubic root of 1047345390 is about 1015.5390828653.

The spelling of 1047345390 in words is "one billion, forty-seven million, three hundred forty-five thousand, three hundred ninety".