145568340 has 120 divisors (see below), whose sum is σ = 464698080. Its totient is φ = 38135232.

The previous prime is 145568321. The next prime is 145568341. The reversal of 145568340 is 43865541.

It is a happy number.

It is a super-2 number, since 2×145568340² = 42380283220711200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 145568295 and 145568304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145568341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 94819 + ... + 96341.

It is an arithmetic number, because the mean of its divisors is an integer number (3872484).

Almost surely, 2^145568340 is an apocalyptic number.

145568340 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 145568340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232349040).

145568340 is an abundant number, since it is smaller than the sum of its proper divisors (319129740).

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

145568340 is a wasteful number, since it uses less digits than its factorization.

145568340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1592 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 145568340 is about 12065.1705333990. The cubic root of 145568340 is about 526.0442887525.

The spelling of 145568340 in words is "one hundred forty-five million, five hundred sixty-eight thousand, three hundred forty".