653145428 has 12 divisors (see below), whose sum is σ = 1230928020. Its totient is φ = 301451712.

The previous prime is 653145397. The next prime is 653145431. The reversal of 653145428 is 824541356.

It can be written as a sum of positive squares in 2 ways, for example, as 403126084 + 250019344 = 20078^2 + 15812^2 .

It is a junction number, because it is equal to n+sod(n) for n = 653145391 and 653145400.

It is a congruent number.

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, 6280193 + ... + 6280296.

It is an arithmetic number, because the mean of its divisors is an integer number (102577335).

Almost surely, 2^653145428 is an apocalyptic number.

It is an amenable number.

653145428 is a deficient number, since it is larger than the sum of its proper divisors (577782592).

653145428 is a wasteful number, since it uses less digits than its factorization.

653145428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12560506 (or 12560504 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 653145428 is about 25556.7100386572. The cubic root of 653145428 is about 867.6341358414.

The spelling of 653145428 in words is "six hundred fifty-three million, one hundred forty-five thousand, four hundred twenty-eight".