216420034 has 16 divisors (see below), whose sum is σ = 329856480. Its totient is φ = 106475040.

The previous prime is 216420023. The next prime is 216420053. The reversal of 216420034 is 430024612.

It is a happy number.

216420034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×216420034⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 216419987 and 216420014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70177 + ... + 73195.

It is an arithmetic number, because the mean of its divisors is an integer number (20616030).

Almost surely, 2^216420034 is an apocalyptic number.

216420034 is a deficient number, since it is larger than the sum of its proper divisors (113436446).

216420034 is a wasteful number, since it uses less digits than its factorization.

216420034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 216420034 is about 14711.2213632995. The cubic root of 216420034 is about 600.3886685439.

Adding to 216420034 its reverse (430024612), we get a palindrome (646444646).

The spelling of 216420034 in words is "two hundred sixteen million, four hundred twenty thousand, thirty-four".