2278372520 has 32 divisors (see below), whose sum is σ = 5202856800. Its totient is φ = 897745728.

The previous prime is 2278372519. The next prime is 2278372529. The reversal of 2278372520 is 252738722.

It is not an unprimeable number, because it can be changed into a prime (2278372529) 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, 422390 + ... + 427749.

It is an arithmetic number, because the mean of its divisors is an integer number (162589275).

Almost surely, 2^2278372520 is an apocalyptic number.

2278372520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2278372520 is an abundant number, since it is smaller than the sum of its proper divisors (2924484280).

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

2278372520 is a wasteful number, since it uses less digits than its factorization.

2278372520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850217 (or 850213 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 2278372520 is about 47732.3005940422. The cubic root of 2278372520 is about 1315.8556349800.

The spelling of 2278372520 in words is "two billion, two hundred seventy-eight million, three hundred seventy-two thousand, five hundred twenty".