47467840 has 56 divisors (see below), whose sum is σ = 129186432. Its totient is φ = 16273920.

The previous prime is 47467811. The next prime is 47467843. The reversal of 47467840 is 4876474.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 47467793 and 47467802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47467843) 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, 8356 + ... + 12835.

Almost surely, 2^47467840 is an apocalyptic number.

47467840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47467840 is an abundant number, since it is smaller than the sum of its proper divisors (81718592).

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

47467840 is a wasteful number, since it uses less digits than its factorization.

47467840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21215 (or 21205 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 47467840 is about 6889.6908493778. The cubic root of 47467840 is about 362.0760704170.

The spelling of 47467840 in words is "forty-seven million, four hundred sixty-seven thousand, eight hundred forty".