16632493 has 4 divisors (see below), whose sum is σ = 16804060. Its totient is φ = 16460928.

The previous prime is 16632487. The next prime is 16632509. The reversal of 16632493 is 39423661.

16632493 = T₁₈₂ + T₁₈₃ + ... + T₄₇₂.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39423661 = 31 ⋅1271731.

It can be written as a sum of positive squares in 2 ways, for example, as 12938409 + 3694084 = 3597^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 16632493 - 2¹³ = 16624301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16632403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85638 + ... + 85831.

It is an arithmetic number, because the mean of its divisors is an integer number (4201015).

Almost surely, 2^16632493 is an apocalyptic number.

It is an amenable number.

16632493 is a deficient number, since it is larger than the sum of its proper divisors (171567).

16632493 is an equidigital number, since it uses as much as digits as its factorization.

16632493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171566.

The product of its digits is 23328, while the sum is 34.

The square root of 16632493 is about 4078.2953546795. The cubic root of 16632493 is about 255.2617739842.

The spelling of 16632493 in words is "sixteen million, six hundred thirty-two thousand, four hundred ninety-three".