145543620 has 48 divisors (see below), whose sum is σ = 410655168. Its totient is φ = 38513280.

The previous prime is 145543597. The next prime is 145543627. The reversal of 145543620 is 26345541.

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

It is not an unprimeable number, because it can be changed into a prime (145543627) 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, 1399 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (8555316).

Almost surely, 2^145543620 is an apocalyptic number.

145543620 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 145543620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205327584).

145543620 is an abundant number, since it is smaller than the sum of its proper divisors (265111548).

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

145543620 is a wasteful number, since it uses less digits than its factorization.

145543620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18660 (or 18658 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 145543620 is about 12064.1460534926. The cubic root of 145543620 is about 526.0145099536.

The spelling of 145543620 in words is "one hundred forty-five million, five hundred forty-three thousand, six hundred twenty".