215007156 has 192 divisors, whose sum is σ = 695439360. Its totient is φ = 55935360.

The previous prime is 215007139. The next prime is 215007161. The reversal of 215007156 is 651700512.

215007156 is a `hidden beast` number, since 2 + 1 + 500 + 7 + 156 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1287385 + ... + 1287551.

It is an arithmetic number, because the mean of its divisors is an integer number (3622080).

Almost surely, 2^215007156 is an apocalyptic number.

215007156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215007156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347719680).

215007156 is an abundant number, since it is smaller than the sum of its proper divisors (480432204).

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

215007156 is a wasteful number, since it uses less digits than its factorization.

215007156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 215007156 is about 14663.1223141594. The cubic root of 215007156 is about 599.0792878713.

Adding to 215007156 its reverse (651700512), we get a palindrome (866707668).

The spelling of 215007156 in words is "two hundred fifteen million, seven thousand, one hundred fifty-six".