213002406 has 32 divisors (see below), whose sum is σ = 473978880. Its totient is φ = 70904808.

The previous prime is 213002399. The next prime is 213002417. The reversal of 213002406 is 604200312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 45675 + ... + 50121.

It is an arithmetic number, because the mean of its divisors is an integer number (14811840).

Almost surely, 2^213002406 is an apocalyptic number.

213002406 is an abundant number, since it is smaller than the sum of its proper divisors (260976474).

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

213002406 is a wasteful number, since it uses less digits than its factorization.

213002406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345 (or 5339 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 213002406 is about 14594.6019472954. The cubic root of 213002406 is about 597.2115106213.

Adding to 213002406 its reverse (604200312), we get a palindrome (817202718).

The spelling of 213002406 in words is "two hundred thirteen million, two thousand, four hundred six".