1052211440 has 40 divisors (see below), whose sum is σ = 2795877600. Its totient is φ = 360758016.

The previous prime is 1052211427. The next prime is 1052211449. The reversal of 1052211440 is 441122501.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1052211440² = 2214297828933747200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052211449) 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 7 ways as a sum of consecutive naturals, for example, 938915 + ... + 940034.

It is an arithmetic number, because the mean of its divisors is an integer number (69896940).

Almost surely, 2^1052211440 is an apocalyptic number.

1052211440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052211440 is an abundant number, since it is smaller than the sum of its proper divisors (1743666160).

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

1052211440 is a wasteful number, since it uses less digits than its factorization.

1052211440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878969 (or 1878963 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1052211440 is about 32437.8088039251. The cubic root of 1052211440 is about 1017.1094118682.

Adding to 1052211440 its reverse (441122501), we get a palindrome (1493333941).

The spelling of 1052211440 in words is "one billion, fifty-two million, two hundred eleven thousand, four hundred forty".