145267224 has 64 divisors (see below), whose sum is σ = 375321600. Its totient is φ = 46827264.

The previous prime is 145267211. The next prime is 145267229. The reversal of 145267224 is 422762541.

It is a super-2 number, since 2×145267224² = 42205132737332352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145267229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99669 + ... + 101115.

It is an arithmetic number, because the mean of its divisors is an integer number (5864400).

Almost surely, 2^145267224 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 145267224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187660800).

145267224 is an abundant number, since it is smaller than the sum of its proper divisors (230054376).

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

145267224 is a wasteful number, since it uses less digits than its factorization.

145267224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592 (or 1588 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 145267224 is about 12052.6853439389. The cubic root of 145267224 is about 525.6813213251.

The spelling of 145267224 in words is "one hundred forty-five million, two hundred sixty-seven thousand, two hundred twenty-four".