2865021276 has 24 divisors (see below), whose sum is σ = 7199284624. Its totient is φ = 881544960.

The previous prime is 2865021217. The next prime is 2865021277. The reversal of 2865021276 is 6721205682.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865021277) 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, 9182605 + ... + 9182916.

Almost surely, 2^2865021276 is an apocalyptic number.

2865021276 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2865021276 is an abundant number, since it is smaller than the sum of its proper divisors (4334263348).

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

2865021276 is a wasteful number, since it uses less digits than its factorization.

2865021276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18365541 (or 18365539 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2865021276 is about 53525.8935095903. The cubic root of 2865021276 is about 1420.2864719921.

The spelling of 2865021276 in words is "two billion, eight hundred sixty-five million, twenty-one thousand, two hundred seventy-six".