16220634 has 16 divisors (see below), whose sum is σ = 32991840. Its totient is φ = 5315120.

The previous prime is 16220629. The next prime is 16220639. The reversal of 16220634 is 43602261.

It is an interprime number because it is at equal distance from previous prime (16220629) and next prime (16220639).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16220639) 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, 22557 + ... + 23264.

It is an arithmetic number, because the mean of its divisors is an integer number (2061990).

Almost surely, 2^16220634 is an apocalyptic number.

16220634 is an abundant number, since it is smaller than the sum of its proper divisors (16771206).

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

16220634 is a wasteful number, since it uses less digits than its factorization.

16220634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45885.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 16220634 is about 4027.4848230627. The cubic root of 16220634 is about 253.1371823431.

Adding to 16220634 its reverse (43602261), we get a palindrome (59822895).

The spelling of 16220634 in words is "sixteen million, two hundred twenty thousand, six hundred thirty-four".