870213438 has 24 divisors (see below), whose sum is σ = 1931450976. Its totient is φ = 282996000.

The previous prime is 870213437. The next prime is 870213497. The reversal of 870213438 is 834312078.

870213438 is a `hidden beast` number, since 8 + 7 + 0 + 213 + 438 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870213437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 588838 + ... + 590313.

It is an arithmetic number, because the mean of its divisors is an integer number (80477124).

Almost surely, 2^870213438 is an apocalyptic number.

870213438 is an abundant number, since it is smaller than the sum of its proper divisors (1061237538).

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

870213438 is a wasteful number, since it uses less digits than its factorization.

870213438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179200 (or 1179197 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 870213438 is about 29499.3802985758. The cubic root of 870213438 is about 954.7183321811.

The spelling of 870213438 in words is "eight hundred seventy million, two hundred thirteen thousand, four hundred thirty-eight".