47345520 has 40 divisors (see below), whose sum is σ = 146771856. Its totient is φ = 12625408.

The previous prime is 47345509. The next prime is 47345539. The reversal of 47345520 is 2554374.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98397 + ... + 98876.

Almost surely, 2^47345520 is an apocalyptic number.

47345520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47345520 is an abundant number, since it is smaller than the sum of its proper divisors (99426336).

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

47345520 is a wasteful number, since it uses less digits than its factorization.

47345520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197289 (or 197283 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 47345520 is about 6880.8080920776. The cubic root of 47345520 is about 361.7647912968.

Adding to 47345520 its reverse (2554374), we get a palindrome (49899894).

The spelling of 47345520 in words is "forty-seven million, three hundred forty-five thousand, five hundred twenty".