302005140 has 48 divisors (see below), whose sum is σ = 846384000. Its totient is φ = 80461440.

The previous prime is 302005097. The next prime is 302005147. The reversal of 302005140 is 41500203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302005147) 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, 108486 + ... + 111234.

It is an arithmetic number, because the mean of its divisors is an integer number (17633000).

Almost surely, 2^302005140 is an apocalyptic number.

302005140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

302005140 is an abundant number, since it is smaller than the sum of its proper divisors (544378860).

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

302005140 is a wasteful number, since it uses less digits than its factorization.

302005140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592 (or 4590 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 302005140 is about 17378.2950832353. The cubic root of 302005140 is about 670.9210914943.

Adding to 302005140 its reverse (41500203), we get a palindrome (343505343).

The spelling of 302005140 in words is "three hundred two million, five thousand, one hundred forty".