215124152 has 32 divisors (see below), whose sum is σ = 425018880. Its totient is φ = 101877600.

The previous prime is 215124149. The next prime is 215124181. The reversal of 215124152 is 251421512.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13277 + ... + 24627.

It is an arithmetic number, because the mean of its divisors is an integer number (13281840).

Almost surely, 2^215124152 is an apocalyptic number.

It is an amenable number.

215124152 is a deficient number, since it is larger than the sum of its proper divisors (209894728).

215124152 is a wasteful number, since it uses less digits than its factorization.

215124152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483 (or 11479 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 215124152 is about 14667.1112356865. Note that the first 3 decimals coincide. The cubic root of 215124152 is about 599.1879310321.

Adding to 215124152 its reverse (251421512), we get a palindrome (466545664).

The spelling of 215124152 in words is "two hundred fifteen million, one hundred twenty-four thousand, one hundred fifty-two".