145202640 has 80 divisors (see below), whose sum is σ = 491057856. Its totient is φ = 35200000.

The previous prime is 145202633. The next prime is 145202641. The reversal of 145202640 is 46202541.

145202640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 145202640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145202641) 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, 24861 + ... + 30140.

Almost surely, 2^145202640 is an apocalyptic number.

145202640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145202640 is an abundant number, since it is smaller than the sum of its proper divisors (345855216).

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

145202640 is a wasteful number, since it uses less digits than its factorization.

145202640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55028 (or 55022 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 145202640 is about 12050.0058091272. The cubic root of 145202640 is about 525.6034059861.

Subtracting from 145202640 its reverse (46202541), we obtain a palindrome (99000099).

The spelling of 145202640 in words is "one hundred forty-five million, two hundred two thousand, six hundred forty".