213496784 has 10 divisors (see below), whose sum is σ = 413650050. Its totient is φ = 106748384.

The previous prime is 213496769. The next prime is 213496807. The reversal of 213496784 is 487694312.

It can be written as a sum of positive squares in only one way, i.e., 171610000 + 41886784 = 13100^2 + 6472^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6671759 + ... + 6671790.

It is an arithmetic number, because the mean of its divisors is an integer number (41365005).

Almost surely, 2^213496784 is an apocalyptic number.

It is an amenable number.

213496784 is a deficient number, since it is larger than the sum of its proper divisors (200153266).

213496784 is a wasteful number, since it uses less digits than its factorization.

213496784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13343557 (or 13343551 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 213496784 is about 14611.5291465336. The cubic root of 213496784 is about 597.6731957079.

The spelling of 213496784 in words is "two hundred thirteen million, four hundred ninety-six thousand, seven hundred eighty-four".