145220700 has 72 divisors (see below), whose sum is σ = 424122160. Its totient is φ = 38361600.

The previous prime is 145220683. The next prime is 145220711. The reversal of 145220700 is 7022541.

145220700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30480 + ... + 34920.

Almost surely, 2^145220700 is an apocalyptic number.

145220700 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 145220700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212061080).

145220700 is an abundant number, since it is smaller than the sum of its proper divisors (278901460).

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

145220700 is a wasteful number, since it uses less digits than its factorization.

145220700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567 (or 4560 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 145220700 is about 12050.7551630593. The cubic root of 145220700 is about 525.6251962326.

The spelling of 145220700 in words is "one hundred forty-five million, two hundred twenty thousand, seven hundred".