216267454 has 16 divisors (see below), whose sum is σ = 355948992. Its totient is φ = 97931808.

The previous prime is 216267449. The next prime is 216267463. The reversal of 216267454 is 454762612.

It is a super-2 number, since 2×216267454² = 93543223319284232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77094 + ... + 79849.

It is an arithmetic number, because the mean of its divisors is an integer number (22246812).

Almost surely, 2^216267454 is an apocalyptic number.

216267454 is a deficient number, since it is larger than the sum of its proper divisors (139681538).

216267454 is a wasteful number, since it uses less digits than its factorization.

216267454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157011.

The product of its digits is 80640, while the sum is 37.

The square root of 216267454 is about 14706.0346116824. The cubic root of 216267454 is about 600.2475404514.

The spelling of 216267454 in words is "two hundred sixteen million, two hundred sixty-seven thousand, four hundred fifty-four".