1002897864 has 96 divisors (see below), whose sum is σ = 2968842240. Its totient is φ = 304473600.

The previous prime is 1002897851. The next prime is 1002897877. The reversal of 1002897864 is 4687982001.

It is an interprime number because it is at equal distance from previous prime (1002897851) and next prime (1002897877).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24729 + ... + 51159.

It is an arithmetic number, because the mean of its divisors is an integer number (30925440).

Almost surely, 2^1002897864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002897864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484421120).

1002897864 is an abundant number, since it is smaller than the sum of its proper divisors (1965944376).

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

1002897864 is a wasteful number, since it uses less digits than its factorization.

1002897864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26491 (or 26484 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1002897864 is about 31668.5627081495. The cubic root of 1002897864 is about 1000.9650230975.

The spelling of 1002897864 in words is "one billion, two million, eight hundred ninety-seven thousand, eight hundred sixty-four".