857432412 has 24 divisors (see below), whose sum is σ = 2222973200. Its totient is φ = 285810768.

The previous prime is 857432371. The next prime is 857432449. The reversal of 857432412 is 214234758.

It is a happy number.

857432412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×857432412² = 1470380682296275488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 3969487 + ... + 3969702.

Almost surely, 2^857432412 is an apocalyptic number.

It is an amenable number.

857432412 is an abundant number, since it is smaller than the sum of its proper divisors (1365540788).

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

857432412 is a wasteful number, since it uses less digits than its factorization.

857432412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939202 (or 7939194 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 857432412 is about 29281.9468615050. The cubic root of 857432412 is about 950.0212043282.

The spelling of 857432412 in words is "eight hundred fifty-seven million, four hundred thirty-two thousand, four hundred twelve".