73828989 has 24 divisors (see below), whose sum is σ = 119103712. Its totient is φ = 45431280.

The previous prime is 73828981. The next prime is 73829017. The reversal of 73828989 is 98982837.

It is not a de Polignac number, because 73828989 - 2³ = 73828981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73828981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8527 + ... + 14844.

Almost surely, 2^73828989 is an apocalyptic number.

It is an amenable number.

73828989 is a deficient number, since it is larger than the sum of its proper divisors (45274723).

73828989 is a wasteful number, since it uses less digits than its factorization.

73828989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23399 (or 23387 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 73828989 is about 8592.3797052970. The cubic root of 73828989 is about 419.5099897562.

The spelling of 73828989 in words is "seventy-three million, eight hundred twenty-eight thousand, nine hundred eighty-nine".