47193920 has 28 divisors (see below), whose sum is σ = 112381284. Its totient is φ = 18877440.

The previous prime is 47193901. The next prime is 47193943. The reversal of 47193920 is 2939174.

It can be written as a sum of positive squares in 2 ways, for example, as 37258816 + 9935104 = 6104^2 + 3152^2 .

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, 73421 + ... + 74060.

Almost surely, 2^47193920 is an apocalyptic number.

47193920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47193920 is an abundant number, since it is smaller than the sum of its proper divisors (65187364).

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

47193920 is a wasteful number, since it uses less digits than its factorization.

47193920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147498 (or 147488 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 47193920 is about 6869.7831115691. The cubic root of 47193920 is about 361.3782557251.

The spelling of 47193920 in words is "forty-seven million, one hundred ninety-three thousand, nine hundred twenty".