2145094280 has 64 divisors (see below), whose sum is σ = 5606426880. Its totient is φ = 723398400.

The previous prime is 2145094271. The next prime is 2145094283. The reversal of 2145094280 is 824905412.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2145094280.

It is not an unprimeable number, because it can be changed into a prime (2145094283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45716 + ... + 79875.

It is an arithmetic number, because the mean of its divisors is an integer number (87600420).

Almost surely, 2^2145094280 is an apocalyptic number.

2145094280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145094280 is an abundant number, since it is smaller than the sum of its proper divisors (3461332600).

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

2145094280 is a wasteful number, since it uses less digits than its factorization.

2145094280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125670 (or 125666 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2145094280 is about 46315.1625280534. The cubic root of 2145094280 is about 1289.6804849358.

Adding to 2145094280 its reverse (824905412), we get a palindrome (2969999692).

The spelling of 2145094280 in words is "two billion, one hundred forty-five million, ninety-four thousand, two hundred eighty".