128922653 has 4 divisors (see below), whose sum is σ = 129937920. Its totient is φ = 127907388.

The previous prime is 128922623. The next prime is 128922667. The reversal of 128922653 is 356229821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128922653 - 2¹² = 128918557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128922623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507443 + ... + 507696.

It is an arithmetic number, because the mean of its divisors is an integer number (32484480).

Almost surely, 2^128922653 is an apocalyptic number.

It is an amenable number.

128922653 is a deficient number, since it is larger than the sum of its proper divisors (1015267).

128922653 is a wasteful number, since it uses less digits than its factorization.

128922653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015266.

The product of its digits is 51840, while the sum is 38.

The square root of 128922653 is about 11354.4111692329. The cubic root of 128922653 is about 505.1764282420.

The spelling of 128922653 in words is "one hundred twenty-eight million, nine hundred twenty-two thousand, six hundred fifty-three".