145740640 has 96 divisors (see below), whose sum is σ = 365783040. Its totient is φ = 54720000.

The previous prime is 145740629. The next prime is 145740713. The reversal of 145740640 is 46047541.

145740640 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 15 ways as a sum of consecutive naturals, for example, 580515 + ... + 580765.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^145740640 is an apocalyptic number.

145740640 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 145740640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182891520).

145740640 is an abundant number, since it is smaller than the sum of its proper divisors (220042400).

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

145740640 is a wasteful number, since it uses less digits than its factorization.

145740640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 145740640 is about 12072.3088098342. The cubic root of 145740640 is about 526.2517553254.

The spelling of 145740640 in words is "one hundred forty-five million, seven hundred forty thousand, six hundred forty".