73828389 has 4 divisors (see below), whose sum is σ = 98437856. Its totient is φ = 49218924.

The previous prime is 73828373. The next prime is 73828397. The reversal of 73828389 is 98382837.

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 not a de Polignac number, because 73828389 - 2⁴ = 73828373 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 (73828309) 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, 12304729 + ... + 12304734.

It is an arithmetic number, because the mean of its divisors is an integer number (24609464).

Almost surely, 2^73828389 is an apocalyptic number.

It is an amenable number.

73828389 is a deficient number, since it is larger than the sum of its proper divisors (24609467).

73828389 is a wasteful number, since it uses less digits than its factorization.

73828389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24609466.

The product of its digits is 580608, while the sum is 48.

The square root of 73828389 is about 8592.3447905679. The cubic root of 73828389 is about 419.5088533161.

The spelling of 73828389 in words is "seventy-three million, eight hundred twenty-eight thousand, three hundred eighty-nine".