145150640 has 20 divisors (see below), whose sum is σ = 337475424. Its totient is φ = 58060224.

The previous prime is 145150627. The next prime is 145150651. The reversal of 145150640 is 46051541.

It is a tau number, because it is divible by the number of its divisors (20).

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, 907112 + ... + 907271.

Almost surely, 2^145150640 is an apocalyptic number.

145150640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145150640 is an abundant number, since it is smaller than the sum of its proper divisors (192324784).

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

145150640 is a wasteful number, since it uses less digits than its factorization.

145150640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814396 (or 1814390 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 145150640 is about 12047.8479406075. The cubic root of 145150640 is about 525.5406554272.

Subtracting from 145150640 its reverse (46051541), we obtain a palindrome (99099099).

The spelling of 145150640 in words is "one hundred forty-five million, one hundred fifty thousand, six hundred forty".