145591680 has 256 divisors, whose sum is σ = 527788800. Its totient is φ = 33841152.

The previous prime is 145591651. The next prime is 145591703. The reversal of 145591680 is 86195541.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474087 + ... + 474393.

It is an arithmetic number, because the mean of its divisors is an integer number (2061675).

Almost surely, 2^145591680 is an apocalyptic number.

145591680 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 145591680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263894400).

145591680 is an abundant number, since it is smaller than the sum of its proper divisors (382197120).

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

145591680 is a wasteful number, since it uses less digits than its factorization.

145591680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 145591680 is about 12066.1377416305. The cubic root of 145591680 is about 526.0724020487.

The spelling of 145591680 in words is "one hundred forty-five million, five hundred ninety-one thousand, six hundred eighty".