145309020 has 24 divisors (see below), whose sum is σ = 406865424. Its totient is φ = 38749056.

The previous prime is 145308991. The next prime is 145309037. The reversal of 145309020 is 20903541.

145309020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145309020² = 42229422586720800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210849 + ... + 1210968.

It is an arithmetic number, because the mean of its divisors is an integer number (16952726).

Almost surely, 2^145309020 is an apocalyptic number.

145309020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145309020 is an abundant number, since it is smaller than the sum of its proper divisors (261556404).

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

145309020 is a wasteful number, since it uses less digits than its factorization.

145309020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421829 (or 2421827 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 145309020 is about 12054.4191067011. The cubic root of 145309020 is about 525.7317324893.

The spelling of 145309020 in words is "one hundred forty-five million, three hundred nine thousand, twenty".