52671840 has 192 divisors, whose sum is σ = 186955776. Its totient is φ = 12367872.

The previous prime is 52671811. The next prime is 52671841. The reversal of 52671840 is 4817625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52671841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143337 + ... + 143703.

It is an arithmetic number, because the mean of its divisors is an integer number (973728).

Almost surely, 2^52671840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52671840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93477888).

52671840 is an abundant number, since it is smaller than the sum of its proper divisors (134283936).

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

52671840 is a wasteful number, since it uses less digits than its factorization.

52671840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 52671840 is about 7257.5367722114. The cubic root of 52671840 is about 374.8517102570.

The spelling of 52671840 in words is "fifty-two million, six hundred seventy-one thousand, eight hundred forty".