902869640 has 16 divisors (see below), whose sum is σ = 2031456780. Its totient is φ = 361147840.

The previous prime is 902869571. The next prime is 902869657. The reversal of 902869640 is 46968209.

It can be written as a sum of positive squares in 2 ways, for example, as 890067556 + 12802084 = 29834^2 + 3578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 902869591 and 902869600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11285831 + ... + 11285910.

Almost surely, 2^902869640 is an apocalyptic number.

It is an amenable number.

902869640 is an abundant number, since it is smaller than the sum of its proper divisors (1128587140).

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

902869640 is a wasteful number, since it uses less digits than its factorization.

902869640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22571752 (or 22571748 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 902869640 is about 30047.7892697616. The cubic root of 902869640 is about 966.5144466351.

The spelling of 902869640 in words is "nine hundred two million, eight hundred sixty-nine thousand, six hundred forty".