2287388640 has 96 divisors (see below), whose sum is σ = 7518583296. Its totient is φ = 583447040.

The previous prime is 2287388639. The next prime is 2287388651. The reversal of 2287388640 is 468837822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2287388640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92556 + ... + 114635.

It is an arithmetic number, because the mean of its divisors is an integer number (78318576).

Almost surely, 2^2287388640 is an apocalyptic number.

2287388640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2287388640 is an abundant number, since it is smaller than the sum of its proper divisors (5231194656).

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

2287388640 is a wasteful number, since it uses less digits than its factorization.

2287388640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207232 (or 207224 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 2287388640 is about 47826.6519840141. The cubic root of 2287388640 is about 1317.5890795004.

The spelling of 2287388640 in words is "two billion, two hundred eighty-seven million, three hundred eighty-eight thousand, six hundred forty".