1071397200 has 240 divisors, whose sum is σ = 3595769856. Its totient is φ = 272371200.

The previous prime is 1071397133. The next prime is 1071397237. The reversal of 1071397200 is 27931701.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1071397200² = 2295783920335680000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3087427 + ... + 3087773.

Almost surely, 2^1071397200 is an apocalyptic number.

1071397200 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 1071397200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797884928).

1071397200 is an abundant number, since it is smaller than the sum of its proper divisors (2524372656).

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

1071397200 is a wasteful number, since it uses less digits than its factorization.

1071397200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 1071397200 is about 32732.2043254041. The cubic root of 1071397200 is about 1023.2541209386.

The spelling of 1071397200 in words is "one billion, seventy-one million, three hundred ninety-seven thousand, two hundred".