1100070920 has 64 divisors (see below), whose sum is σ = 2757510000. Its totient is φ = 392168448.

The previous prime is 1100070859. The next prime is 1100070953. The reversal of 1100070920 is 290700011.

It can be written as a sum of positive squares in 8 ways, for example, as 672987364 + 427083556 = 25942^2 + 20666^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1100070892 and 1100070901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21395 + ... + 51554.

Almost surely, 2^1100070920 is an apocalyptic number.

1100070920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100070920 is an abundant number, since it is smaller than the sum of its proper divisors (1657439080).

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

1100070920 is a wasteful number, since it uses less digits than its factorization.

1100070920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73002 (or 72998 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1100070920 is about 33167.3170455495. The cubic root of 1100070920 is about 1032.3022996177.

Adding to 1100070920 its reverse (290700011), we get a palindrome (1390770931).

The spelling of 1100070920 in words is "one billion, one hundred million, seventy thousand, nine hundred twenty".