216477628 has 6 divisors (see below), whose sum is σ = 378835856. Its totient is φ = 108238812.

The previous prime is 216477601. The next prime is 216477647. The reversal of 216477628 is 826774612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27059700 + ... + 27059707.

Almost surely, 2^216477628 is an apocalyptic number.

It is an amenable number.

216477628 is a deficient number, since it is larger than the sum of its proper divisors (162358228).

216477628 is a wasteful number, since it uses less digits than its factorization.

216477628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54119411 (or 54119409 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 216477628 is about 14713.1787184143. The cubic root of 216477628 is about 600.4419225756.

The spelling of 216477628 in words is "two hundred sixteen million, four hundred seventy-seven thousand, six hundred twenty-eight".