145485720 has 160 divisors (see below), whose sum is σ = 495799920. Its totient is φ = 38257920.

The previous prime is 145485713. The next prime is 145485731. The reversal of 145485720 is 27584541.

145485720 is a `hidden beast` number, since 1 + 45 + 48 + 572 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 268650 + ... + 269190.

Almost surely, 2^145485720 is an apocalyptic number.

145485720 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 145485720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247899960).

145485720 is an abundant number, since it is smaller than the sum of its proper divisors (350314200).

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

145485720 is a wasteful number, since it uses less digits than its factorization.

145485720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 145485720 is about 12061.7461422466. The cubic root of 145485720 is about 525.9447478674.

The spelling of 145485720 in words is "one hundred forty-five million, four hundred eighty-five thousand, seven hundred twenty".