145729340 has 24 divisors (see below), whose sum is σ = 306336912. Its totient is φ = 58233600.

The previous prime is 145729333. The next prime is 145729361. The reversal of 145729340 is 43927541.

It is a self number, because there is not a number n which added to its sum of digits gives 145729340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20987 + ... + 27053.

It is an arithmetic number, because the mean of its divisors is an integer number (12764038).

Almost surely, 2^145729340 is an apocalyptic number.

145729340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145729340 is an abundant number, since it is smaller than the sum of its proper divisors (160607572).

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

145729340 is a wasteful number, since it uses less digits than its factorization.

145729340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7277 (or 7275 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 145729340 is about 12071.8407875518. The cubic root of 145729340 is about 526.2381539979.

The spelling of 145729340 in words is "one hundred forty-five million, seven hundred twenty-nine thousand, three hundred forty".