16533690 has 48 divisors (see below), whose sum is σ = 42174432. Its totient is φ = 4147456.

The previous prime is 16533689. The next prime is 16533691. The reversal of 16533690 is 9633561.

It is an interprime number because it is at equal distance from previous prime (16533689) and next prime (16533691).

It is a super-2 number, since 2×16533690² = 546725810032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16533691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7717 + ... + 9623.

It is an arithmetic number, because the mean of its divisors is an integer number (878634).

Almost surely, 2^16533690 is an apocalyptic number.

16533690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16533690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21087216).

16533690 is an abundant number, since it is smaller than the sum of its proper divisors (25640742).

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

16533690 is a wasteful number, since it uses less digits than its factorization.

16533690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 16533690 is about 4066.1640399767. The cubic root of 16533690 is about 254.7553208546.

The spelling of 16533690 in words is "sixteen million, five hundred thirty-three thousand, six hundred ninety".