216153406 has 48 divisors (see below), whose sum is σ = 385981200. Its totient is φ = 90504960.

The previous prime is 216153391. The next prime is 216153409. The reversal of 216153406 is 604351612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216153409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1450620 + ... + 1450768.

It is an arithmetic number, because the mean of its divisors is an integer number (8041275).

Almost surely, 2^216153406 is an apocalyptic number.

216153406 is a deficient number, since it is larger than the sum of its proper divisors (169827794).

216153406 is a wasteful number, since it uses less digits than its factorization.

216153406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216153406 is about 14702.1565084854. The cubic root of 216153406 is about 600.1420089790.

The spelling of 216153406 in words is "two hundred sixteen million, one hundred fifty-three thousand, four hundred six".