213228837620 has 48 divisors (see below), whose sum is σ = 453319070400. Its totient is φ = 84237232896.

The previous prime is 213228837607. The next prime is 213228837623. The reversal of 213228837620 is 26738822312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213228837623) 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, 5706719 + ... + 5743961.

It is an arithmetic number, because the mean of its divisors is an integer number (9444147300).

Almost surely, 2^213228837620 is an apocalyptic number.

213228837620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213228837620 is an abundant number, since it is smaller than the sum of its proper divisors (240090232780).

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

213228837620 is a wasteful number, since it uses less digits than its factorization.

213228837620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40784 (or 40782 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 213228837620 in words is "two hundred thirteen billion, two hundred twenty-eight million, eight hundred thirty-seven thousand, six hundred twenty".