213041428 has 6 divisors (see below), whose sum is σ = 372822506. Its totient is φ = 106520712.

The previous prime is 213041419. The next prime is 213041429. The reversal of 213041428 is 824140312.

It can be written as a sum of positive squares in only one way, i.e., 211644304 + 1397124 = 14548^2 + 1182^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213041429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26630175 + ... + 26630182.

Almost surely, 2^213041428 is an apocalyptic number.

It is an amenable number.

213041428 is a deficient number, since it is larger than the sum of its proper divisors (159781078).

213041428 is a wasteful number, since it uses less digits than its factorization.

213041428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53260361 (or 53260359 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 213041428 is about 14595.9387502140. The cubic root of 213041428 is about 597.2479780725.

The spelling of 213041428 in words is "two hundred thirteen million, forty-one thousand, four hundred twenty-eight".