145649152 has 60 divisors (see below), whose sum is σ = 320010768. Its totient is φ = 66176000.

The previous prime is 145649113. The next prime is 145649159. The reversal of 145649152 is 251946541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145649159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60777 + ... + 63127.

Almost surely, 2^145649152 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 145649152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160005384).

145649152 is an abundant number, since it is smaller than the sum of its proper divisors (174361616).

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

145649152 is an equidigital number, since it uses as much as digits as its factorization.

145649152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2364 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 145649152 is about 12068.5190475054. The cubic root of 145649152 is about 526.1416149223.

It can be divided in two parts, 14564 and 9152, that added together give a square (23716 = 154²).

The spelling of 145649152 in words is "one hundred forty-five million, six hundred forty-nine thousand, one hundred fifty-two".