2865532440 has 32 divisors (see below), whose sum is σ = 8596597680. Its totient is φ = 764141952.

The previous prime is 2865532429. The next prime is 2865532489. The reversal of 2865532440 is 442355682.

It is a super-2 number, since 2×2865532440² = 16422552329384707200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11939599 + ... + 11939838.

Almost surely, 2^2865532440 is an apocalyptic number.

2865532440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2865532440 is an abundant number, since it is smaller than the sum of its proper divisors (5731065240).

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

2865532440 is a wasteful number, since it uses less digits than its factorization.

2865532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23879451 (or 23879447 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The square root of 2865532440 is about 53530.6682192554. The cubic root of 2865532440 is about 1420.3709339759.

The spelling of 2865532440 in words is "two billion, eight hundred sixty-five million, five hundred thirty-two thousand, four hundred forty".