900870215 has 16 divisors (see below), whose sum is σ = 1244503872. Its totient is φ = 613227264.

The previous prime is 900870211. The next prime is 900870227. The reversal of 900870215 is 512078009.

It is a cyclic number.

It is not a de Polignac number, because 900870215 - 2² = 900870211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900870211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89144 + ... + 98733.

It is an arithmetic number, because the mean of its divisors is an integer number (77781492).

Almost surely, 2^900870215 is an apocalyptic number.

900870215 is a deficient number, since it is larger than the sum of its proper divisors (343633657).

900870215 is a wasteful number, since it uses less digits than its factorization.

900870215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188026.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 900870215 is about 30014.5000791284. The cubic root of 900870215 is about 965.8004633825.

It can be divided in two parts, 90087021 and 5, that multiplied together give a triangular number (450435105 = T₃₀₀₁₄).

The spelling of 900870215 in words is "nine hundred million, eight hundred seventy thousand, two hundred fifteen".