72890229 has 4 divisors (see below), whose sum is σ = 97186976. Its totient is φ = 48593484.

The previous prime is 72890227. The next prime is 72890231. The reversal of 72890229 is 92209827.

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 an interprime number because it is at equal distance from previous prime (72890227) and next prime (72890231).

It is not a de Polignac number, because 72890229 - 2¹ = 72890227 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 (72890221) 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, 12148369 + ... + 12148374.

It is an arithmetic number, because the mean of its divisors is an integer number (24296744).

Almost surely, 2^72890229 is an apocalyptic number.

It is an amenable number.

72890229 is a deficient number, since it is larger than the sum of its proper divisors (24296747).

72890229 is a wasteful number, since it uses less digits than its factorization.

72890229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24296746.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 72890229 is about 8537.5774667056. The cubic root of 72890229 is about 417.7243304198.

The spelling of 72890229 in words is "seventy-two million, eight hundred ninety thousand, two hundred twenty-nine".