23428898649 has 64 divisors (see below), whose sum is σ = 38605665280. Its totient is φ = 13949210880.

The previous prime is 23428898617. The next prime is 23428898743. The reversal of 23428898649 is 94689882432.

23428898649 is a `hidden beast` number, since 234 + 288 + 9 + 86 + 49 = 666.

It is not a de Polignac number, because 23428898649 - 2⁵ = 23428898617 is a prime.

It is a super-2 number, since 2×23428898649² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23428898749) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2345664 + ... + 2355630.

It is an arithmetic number, because the mean of its divisors is an integer number (603213520).

Almost surely, 2^23428898649 is an apocalyptic number.

It is an amenable number.

23428898649 is a deficient number, since it is larger than the sum of its proper divisors (15176766631).

23428898649 is a wasteful number, since it uses less digits than its factorization.

23428898649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10207 (or 10201 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 63.

The spelling of 23428898649 in words is "twenty-three billion, four hundred twenty-eight million, eight hundred ninety-eight thousand, six hundred forty-nine".