215039448 has 192 divisors, whose sum is σ = 665333760. Its totient is φ = 64665216.

The previous prime is 215039413. The next prime is 215039453. The reversal of 215039448 is 844930512.

215039448 is a `hidden beast` number, since 21 + 503 + 94 + 48 = 666.

It is a super-2 number, since 2×215039448² = 92483928392289408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1693161 + ... + 1693287.

It is an arithmetic number, because the mean of its divisors is an integer number (3465280).

Almost surely, 2^215039448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215039448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332666880).

215039448 is an abundant number, since it is smaller than the sum of its proper divisors (450294312).

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

215039448 is a wasteful number, since it uses less digits than its factorization.

215039448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 215039448 is about 14664.2234025536. The cubic root of 215039448 is about 599.1092783459.

The spelling of 215039448 in words is "two hundred fifteen million, thirty-nine thousand, four hundred forty-eight".