47421312 has 32 divisors (see below), whose sum is σ = 125963880. Its totient is φ = 15806976.

The previous prime is 47421299. The next prime is 47421337. The reversal of 47421312 is 21312474.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×47421312³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 61363 + ... + 62130.

Almost surely, 2^47421312 is an apocalyptic number.

It is an amenable number.

47421312 is an abundant number, since it is smaller than the sum of its proper divisors (78542568).

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

47421312 is a wasteful number, since it uses less digits than its factorization.

47421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123510 (or 123498 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 47421312 is about 6886.3133823549. The cubic root of 47421312 is about 361.9577293622.

Adding to 47421312 its reverse (21312474), we get a palindrome (68733786).

The spelling of 47421312 in words is "forty-seven million, four hundred twenty-one thousand, three hundred twelve".