145450920 has 64 divisors (see below), whose sum is σ = 441288000. Its totient is φ = 38348288.

The previous prime is 145450889. The next prime is 145450937. The reversal of 145450920 is 29054541.

145450920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3871 + ... + 17489.

It is an arithmetic number, because the mean of its divisors is an integer number (6895125).

Almost surely, 2^145450920 is an apocalyptic number.

145450920 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 145450920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220644000).

145450920 is an abundant number, since it is smaller than the sum of its proper divisors (295837080).

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

145450920 is a wasteful number, since it uses less digits than its factorization.

145450920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722 (or 13718 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 145450920 is about 12060.3034787687. The cubic root of 145450920 is about 525.9028094174.

The spelling of 145450920 in words is "one hundred forty-five million, four hundred fifty thousand, nine hundred twenty".