72838057 has 4 divisors (see below), whose sum is σ = 72937360. Its totient is φ = 72738756.

The previous prime is 72838049. The next prime is 72838067. The reversal of 72838057 is 75083827.

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 72838057 - 2³ = 72838049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72838027) 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, 48543 + ... + 50020.

It is an arithmetic number, because the mean of its divisors is an integer number (18234340).

Almost surely, 2^72838057 is an apocalyptic number.

It is an amenable number.

72838057 is a deficient number, since it is larger than the sum of its proper divisors (99303).

72838057 is an equidigital number, since it uses as much as digits as its factorization.

72838057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99302.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 72838057 is about 8534.5214862932. The cubic root of 72838057 is about 417.6246430050.

The spelling of 72838057 in words is "seventy-two million, eight hundred thirty-eight thousand, fifty-seven".