215394480 has 120 divisors (see below), whose sum is σ = 826723872. Its totient is φ = 49231872.

The previous prime is 215394451. The next prime is 215394493. The reversal of 215394480 is 84493512.

215394480 is a `hidden beast` number, since 2 + 1 + 539 + 44 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16329 + ... + 26408.

Almost surely, 2^215394480 is an apocalyptic number.

215394480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215394480 is an abundant number, since it is smaller than the sum of its proper divisors (611329392).

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

215394480 is a wasteful number, since it uses less digits than its factorization.

215394480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42763 (or 42754 counting only the distinct ones).

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

The square root of 215394480 is about 14676.3237903775. The cubic root of 215394480 is about 599.4388086040.

The spelling of 215394480 in words is "two hundred fifteen million, three hundred ninety-four thousand, four hundred eighty".