1145000220 has 96 divisors (see below), whose sum is σ = 3945865728. Its totient is φ = 241581312.

The previous prime is 1145000209. The next prime is 1145000251. The reversal of 1145000220 is 220005411.

It is a super-2 number, since 2×1145000220² = 2622051007600096800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1145000220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99394 + ... + 110313.

It is an arithmetic number, because the mean of its divisors is an integer number (41102768).

Almost surely, 2^1145000220 is an apocalyptic number.

1145000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145000220 is an abundant number, since it is smaller than the sum of its proper divisors (2800865508).

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

1145000220 is a wasteful number, since it uses less digits than its factorization.

1145000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209739 (or 209737 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1145000220 is about 33837.8518821748. The cubic root of 1145000220 is about 1046.1690236214.

Adding to 1145000220 its reverse (220005411), we get a palindrome (1365005631).

The spelling of 1145000220 in words is "one billion, one hundred forty-five million, two hundred twenty", and thus it is an aban number.