2865245400 has 240 divisors, whose sum is σ = 10031824440. Its totient is φ = 757900800.

The previous prime is 2865245389. The next prime is 2865245423. The reversal of 2865245400 is 45425682.

It is a happy number.

2865245400 is a `hidden beast` number, since 2 + 8 + 6 + 5 + 245 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2218755 + ... + 2220045.

Almost surely, 2^2865245400 is an apocalyptic number.

2865245400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2865245400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5015912220).

2865245400 is an abundant number, since it is smaller than the sum of its proper divisors (7166579040).

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

2865245400 is a wasteful number, since it uses less digits than its factorization.

2865245400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 2865245400 is about 53527.9870721850. The cubic root of 2865245400 is about 1420.3235062703.

The spelling of 2865245400 in words is "two billion, eight hundred sixty-five million, two hundred forty-five thousand, four hundred".