16216620 has 48 divisors (see below), whose sum is σ = 51894528. Its totient is φ = 3706560.

The previous prime is 16216609. The next prime is 16216631. The reversal of 16216620 is 2661261.

It is an interprime number because it is at equal distance from previous prime (16216609) and next prime (16216631).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18886 + ... + 19725.

It is an arithmetic number, because the mean of its divisors is an integer number (1081136).

Almost surely, 2^16216620 is an apocalyptic number.

16216620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16216620 is an abundant number, since it is smaller than the sum of its proper divisors (35677908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16216620 is a wasteful number, since it uses less digits than its factorization.

16216620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38630 (or 38628 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16216620 is about 4026.9864663294. The cubic root of 16216620 is about 253.1162999601.

Adding to 16216620 its reverse (2661261), we get a palindrome (18877881).

It can be divided in two parts, 16216 and 620, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 16216620 in words is "sixteen million, two hundred sixteen thousand, six hundred twenty".