215233470 has 32 divisors (see below), whose sum is σ = 573956640. Its totient is φ = 57395520.

The previous prime is 215233457. The next prime is 215233483. The reversal of 215233470 is 74332512.

It is an interprime number because it is at equal distance from previous prime (215233457) and next prime (215233483).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398311 + ... + 398850.

It is an arithmetic number, because the mean of its divisors is an integer number (17936145).

Almost surely, 2^215233470 is an apocalyptic number.

215233470 is an abundant number, since it is smaller than the sum of its proper divisors (358723170).

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

215233470 is a wasteful number, since it uses less digits than its factorization.

215233470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797177 (or 797171 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 215233470 is about 14670.8373994125. The cubic root of 215233470 is about 599.2894087657.

Adding to 215233470 its reverse (74332512), we get a palindrome (289565982).

The spelling of 215233470 in words is "two hundred fifteen million, two hundred thirty-three thousand, four hundred seventy".