144025640 has 32 divisors (see below), whose sum is σ = 353518560. Its totient is φ = 52372800.

The previous prime is 144025639. The next prime is 144025691. The reversal of 144025640 is 46520441.

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, 163226 + ... + 164105.

It is an arithmetic number, because the mean of its divisors is an integer number (11047455).

Almost surely, 2^144025640 is an apocalyptic number.

144025640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144025640 is an abundant number, since it is smaller than the sum of its proper divisors (209492920).

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

144025640 is a wasteful number, since it uses less digits than its factorization.

144025640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327353 (or 327349 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 144025640 is about 12001.0682857819. The cubic root of 144025640 is about 524.1793861666.

The spelling of 144025640 in words is "one hundred forty-four million, twenty-five thousand, six hundred forty".