9215238 has 16 divisors (see below), whose sum is σ = 18638640. Its totient is φ = 3037056.

The previous prime is 9215237. The next prime is 9215251. The reversal of 9215238 is 8325129.

It is a happy number.

It is a super-2 number, since 2×9215238² = 169841222793288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9215231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8095 + ... + 9162.

It is an arithmetic number, because the mean of its divisors is an integer number (1164915).

Almost surely, 2^9215238 is an apocalyptic number.

9215238 is an abundant number, since it is smaller than the sum of its proper divisors (9423402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9215238 is a wasteful number, since it uses less digits than its factorization.

9215238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17351.

The product of its digits is 4320, while the sum is 30.

The square root of 9215238 is about 3035.6610482727. The cubic root of 9215238 is about 209.6535330067.

It can be divided in two parts, 9215 and 238, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 9215238 in words is "nine million, two hundred fifteen thousand, two hundred thirty-eight".