145339530 has 64 divisors (see below), whose sum is σ = 415991808. Its totient is φ = 31775040.

The previous prime is 145339529. The next prime is 145339559. The reversal of 145339530 is 35933541.

It is a super-2 number, since 2×145339530² = 42247157961241800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145339491 and 145339500.

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, 10216 + ... + 19875.

It is an arithmetic number, because the mean of its divisors is an integer number (6499872).

Almost surely, 2^145339530 is an apocalyptic number.

145339530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145339530 is an abundant number, since it is smaller than the sum of its proper divisors (270652278).

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

145339530 is a wasteful number, since it uses less digits than its factorization.

145339530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30131.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 145339530 is about 12055.6845512812. The cubic root of 145339530 is about 525.7685252332.

The spelling of 145339530 in words is "one hundred forty-five million, three hundred thirty-nine thousand, five hundred thirty".