857415490 has 16 divisors (see below), whose sum is σ = 1547426880. Its totient is φ = 342059760.

The previous prime is 857415487. The next prime is 857415491. The reversal of 857415490 is 94514758.

857415490 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 2×857415490² = 1470322644983880200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857415491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109326 + ... + 116905.

It is an arithmetic number, because the mean of its divisors is an integer number (96714180).

Almost surely, 2^857415490 is an apocalyptic number.

857415490 is a deficient number, since it is larger than the sum of its proper divisors (690011390).

857415490 is a wasteful number, since it uses less digits than its factorization.

857415490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226617.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 857415490 is about 29281.6579107126. The cubic root of 857415490 is about 950.0149545199.

The spelling of 857415490 in words is "eight hundred fifty-seven million, four hundred fifteen thousand, four hundred ninety".