1145620 has 48 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 390432.

The previous prime is 1145611. The next prime is 1145621. The reversal of 1145620 is 265411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6777 + ... + 6943.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2^1145620 is an apocalyptic number.

1145620 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 1145620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411200).

1145620 is an abundant number, since it is smaller than the sum of its proper divisors (1676780).

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

1145620 is a wasteful number, since it uses less digits than its factorization.

1145620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1145620 is about 1070.3363957187. The cubic root of 1145620 is about 104.6357750712.

It can be divided in two parts, 11456 and 20, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 1145620 in words is "one million, one hundred forty-five thousand, six hundred twenty".