145501830 has 24 divisors (see below), whose sum is σ = 378304992. Its totient is φ = 38800464.

The previous prime is 145501819. The next prime is 145501891. The reversal of 145501830 is 38105541.

It is a junction number, because it is equal to n+sod(n) for n = 145501794 and 145501803.

It is a congruent number.

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, 808254 + ... + 808433.

It is an arithmetic number, because the mean of its divisors is an integer number (15762708).

Almost surely, 2^145501830 is an apocalyptic number.

145501830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145501830 is an abundant number, since it is smaller than the sum of its proper divisors (232803162).

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

145501830 is a wasteful number, since it uses less digits than its factorization.

145501830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616700 (or 1616697 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 145501830 is about 12062.4139375168. The cubic root of 145501830 is about 525.9641602128.

The spelling of 145501830 in words is "one hundred forty-five million, five hundred one thousand, eight hundred thirty".