1145900 has 36 divisors (see below), whose sum is σ = 2843568. Its totient is φ = 392640.

The previous prime is 1145899. The next prime is 1145971. The reversal of 1145900 is 95411.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (78988).

2^1145900 is an apocalyptic number.

1145900 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 1145900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421784).

1145900 is an abundant number, since it is smaller than the sum of its proper divisors (1697668).

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

1145900 is a wasteful number, since it uses less digits than its factorization.

1145900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1145900 is about 1070.4671877269. The cubic root of 1145900 is about 104.6442990235.

The spelling of 1145900 in words is "one million, one hundred forty-five thousand, nine hundred".