47828240 has 20 divisors (see below), whose sum is σ = 111200844. Its totient is φ = 19131264.

The previous prime is 47828239. The next prime is 47828303. The reversal of 47828240 is 4282874.

It can be written as a sum of positive squares in 2 ways, for example, as 37356544 + 10471696 = 6112^2 + 3236^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 47828240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298847 + ... + 299006.

Almost surely, 2^47828240 is an apocalyptic number.

47828240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47828240 is an abundant number, since it is smaller than the sum of its proper divisors (63372604).

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

47828240 is a wasteful number, since it uses less digits than its factorization.

47828240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597866 (or 597860 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 47828240 is about 6915.7964111156. The cubic root of 47828240 is about 362.9901162732.

The spelling of 47828240 in words is "forty-seven million, eight hundred twenty-eight thousand, two hundred forty".