216087454 has 16 divisors (see below), whose sum is σ = 356146560. Its totient is φ = 97513560.

The previous prime is 216087449. The next prime is 216087457. The reversal of 216087454 is 454780612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216087457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32274 + ... + 38389.

It is an arithmetic number, because the mean of its divisors is an integer number (22259160).

Almost surely, 2^216087454 is an apocalyptic number.

216087454 is a deficient number, since it is larger than the sum of its proper divisors (140059106).

216087454 is a wasteful number, since it uses less digits than its factorization.

216087454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70815.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 216087454 is about 14699.9134011055. The cubic root of 216087454 is about 600.0809649999.

The spelling of 216087454 in words is "two hundred sixteen million, eighty-seven thousand, four hundred fifty-four".