145213656 has 192 divisors, whose sum is σ = 455817600. Its totient is φ = 38320128.

The previous prime is 145213639. The next prime is 145213661. The reversal of 145213656 is 656312541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1497000 + ... + 1497096.

It is an arithmetic number, because the mean of its divisors is an integer number (2374050).

Almost surely, 2^145213656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145213656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227908800).

145213656 is an abundant number, since it is smaller than the sum of its proper divisors (310603944).

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

145213656 is a wasteful number, since it uses less digits than its factorization.

145213656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 195 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 145213656 is about 12050.4628956733. The cubic root of 145213656 is about 525.6166975275.

The spelling of 145213656 in words is "one hundred forty-five million, two hundred thirteen thousand, six hundred fifty-six".