857211234 has 16 divisors (see below), whose sum is σ = 1870279200. Its totient is φ = 259760960.

The previous prime is 857211197. The next prime is 857211253. The reversal of 857211234 is 432112758.

It is a super-2 number, since 2×857211234² = 1469622199391605512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 857211195 and 857211204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6493959 + ... + 6494090.

It is an arithmetic number, because the mean of its divisors is an integer number (116892450).

Almost surely, 2^857211234 is an apocalyptic number.

857211234 is an abundant number, since it is smaller than the sum of its proper divisors (1013067966).

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

857211234 is a wasteful number, since it uses less digits than its factorization.

857211234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12988065.

The product of its digits is 13440, while the sum is 33.

The square root of 857211234 is about 29278.1699223158. The cubic root of 857211234 is about 949.9395100912.

The spelling of 857211234 in words is "eight hundred fifty-seven million, two hundred eleven thousand, two hundred thirty-four".