32406213 has 16 divisors (see below), whose sum is σ = 49700480. Its totient is φ = 18398016.

The previous prime is 32406197. The next prime is 32406217. The reversal of 32406213 is 31260423.

It is a happy number.

It is not a de Polignac number, because 32406213 - 2⁴ = 32406197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32406213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32406217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1618 + ... + 8211.

It is an arithmetic number, because the mean of its divisors is an integer number (3106280).

Almost surely, 2^32406213 is an apocalyptic number.

It is an amenable number.

32406213 is a deficient number, since it is larger than the sum of its proper divisors (17294267).

32406213 is a wasteful number, since it uses less digits than its factorization.

32406213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 32406213 is about 5692.6455185616. The cubic root of 32406213 is about 318.8179469144.

Adding to 32406213 its reverse (31260423), we get a palindrome (63666636).

It can be divided in two parts, 3240 and 6213, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 32406213 in words is "thirty-two million, four hundred six thousand, two hundred thirteen".