73789021 has 16 divisors (see below), whose sum is σ = 79372800. Its totient is φ = 68443200.

The previous prime is 73789007. The next prime is 73789031. The reversal of 73789021 is 12098737.

It is a cyclic number.

It is not a de Polignac number, because 73789021 - 2⁷ = 73788893 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 (73789031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189495 + ... + 189883.

It is an arithmetic number, because the mean of its divisors is an integer number (4960800).

Almost surely, 2^73789021 is an apocalyptic number.

It is an amenable number.

73789021 is a deficient number, since it is larger than the sum of its proper divisors (5583779).

73789021 is a wasteful number, since it uses less digits than its factorization.

73789021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 73789021 is about 8590.0536086802. The cubic root of 73789021 is about 419.4342742319.

The spelling of 73789021 in words is "seventy-three million, seven hundred eighty-nine thousand, twenty-one".