47820400 has 30 divisors (see below), whose sum is σ = 114889472. Its totient is φ = 19128000.

The previous prime is 47820373. The next prime is 47820419. The reversal of 47820400 is 402874.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59376 + ... + 60175.

Almost surely, 2^47820400 is an apocalyptic number.

47820400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47820400 is an abundant number, since it is smaller than the sum of its proper divisors (67069072).

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

47820400 is a wasteful number, since it uses less digits than its factorization.

47820400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119569 (or 119558 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 47820400 is about 6915.2295695805. The cubic root of 47820400 is about 362.9702814224.

The spelling of 47820400 in words is "forty-seven million, eight hundred twenty thousand, four hundred".