145249888 has 24 divisors (see below), whose sum is σ = 326812752. Its totient is φ = 62249856.

The previous prime is 145249859. The next prime is 145249933. The reversal of 145249888 is 888942541.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323995 + ... + 324442.

It is an arithmetic number, because the mean of its divisors is an integer number (13617198).

Almost surely, 2^145249888 is an apocalyptic number.

It is an amenable number.

145249888 is an abundant number, since it is smaller than the sum of its proper divisors (181562864).

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

145249888 is an equidigital number, since it uses as much as digits as its factorization.

145249888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648454 (or 648446 counting only the distinct ones).

The product of its digits is 737280, while the sum is 49.

The square root of 145249888 is about 12051.9661466501. The cubic root of 145249888 is about 525.6604091201.

The spelling of 145249888 in words is "one hundred forty-five million, two hundred forty-nine thousand, eight hundred eighty-eight".