213349976 has 64 divisors (see below), whose sum is σ = 469428480. Its totient is φ = 89020800.

The previous prime is 213349973. The next prime is 213349979. The reversal of 213349976 is 679943312.

It is an interprime number because it is at equal distance from previous prime (213349973) and next prime (213349979).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213349973) 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, 378671 + ... + 379233.

It is an arithmetic number, because the mean of its divisors is an integer number (7334820).

Almost surely, 2^213349976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213349976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234714240).

213349976 is an abundant number, since it is smaller than the sum of its proper divisors (256078504).

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

213349976 is a wasteful number, since it uses less digits than its factorization.

213349976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 740 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 213349976 is about 14606.5045784404. The cubic root of 213349976 is about 597.5361704964.

The spelling of 213349976 in words is "two hundred thirteen million, three hundred forty-nine thousand, nine hundred seventy-six".