216342524 has 6 divisors (see below), whose sum is σ = 378599424. Its totient is φ = 108171260.

The previous prime is 216342509. The next prime is 216342541. The reversal of 216342524 is 425243612.

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, 27042812 + ... + 27042819.

It is an arithmetic number, because the mean of its divisors is an integer number (63099904).

Almost surely, 2^216342524 is an apocalyptic number.

It is an amenable number.

216342524 is a deficient number, since it is larger than the sum of its proper divisors (162256900).

216342524 is a wasteful number, since it uses less digits than its factorization.

216342524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54085635 (or 54085633 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 216342524 is about 14708.5867438038. The cubic root of 216342524 is about 600.3169843572.

The spelling of 216342524 in words is "two hundred sixteen million, three hundred forty-two thousand, five hundred twenty-four".