213751450 has 48 divisors (see below), whose sum is σ = 444346560. Its totient is φ = 75824000.

The previous prime is 213751429. The next prime is 213751453. The reversal of 213751450 is 54157312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213751453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17811 + ... + 27289.

It is an arithmetic number, because the mean of its divisors is an integer number (9257220).

Almost surely, 2^213751450 is an apocalyptic number.

213751450 is an abundant number, since it is smaller than the sum of its proper divisors (230595110).

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

213751450 is a wasteful number, since it uses less digits than its factorization.

213751450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9543 (or 9538 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 213751450 is about 14620.2411060830. The cubic root of 213751450 is about 597.9107427100.

The spelling of 213751450 in words is "two hundred thirteen million, seven hundred fifty-one thousand, four hundred fifty".