145213744 has 40 divisors (see below), whose sum is σ = 307292832. Its totient is φ = 66071040.

The previous prime is 145213727. The next prime is 145213777. The reversal of 145213744 is 447312541.

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, 9852 + ... + 19684.

Almost surely, 2^145213744 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 145213744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153646416).

145213744 is an abundant number, since it is smaller than the sum of its proper divisors (162079088).

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

145213744 is a wasteful number, since it uses less digits than its factorization.

145213744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9925 (or 9919 counting only the distinct ones).

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

The square root of 145213744 is about 12050.4665469848. The cubic root of 145213744 is about 525.6168037026.

The spelling of 145213744 in words is "one hundred forty-five million, two hundred thirteen thousand, seven hundred forty-four".