653434140 has 48 divisors (see below), whose sum is σ = 1909168128. Its totient is φ = 166672704.

The previous prime is 653434129. The next prime is 653434141. The reversal of 653434140 is 41434356.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 653434098 and 653434107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653434141) 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, 235372 + ... + 238131.

It is an arithmetic number, because the mean of its divisors is an integer number (39774336).

Almost surely, 2^653434140 is an apocalyptic number.

653434140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

653434140 is an abundant number, since it is smaller than the sum of its proper divisors (1255733988).

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

653434140 is a wasteful number, since it uses less digits than its factorization.

653434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473538 (or 473536 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 653434140 is about 25562.3578724655. The cubic root of 653434140 is about 867.7619580566.

Adding to 653434140 its reverse (41434356), we get a palindrome (694868496).

The spelling of 653434140 in words is "six hundred fifty-three million, four hundred thirty-four thousand, one hundred forty".