47257740 has 36 divisors (see below), whose sum is σ = 143349024. Its totient is φ = 12602016.

The previous prime is 47257729. The next prime is 47257751. The reversal of 47257740 is 4775274.

It is a happy number.

47257740 is a `hidden beast` number, since 47 + 2 + 577 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (47257729) and next prime (47257751).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47257695 and 47257704.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131092 + ... + 131451.

Almost surely, 2^47257740 is an apocalyptic number.

It is an amenable number.

47257740 is an abundant number, since it is smaller than the sum of its proper divisors (96091284).

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

47257740 is a wasteful number, since it uses less digits than its factorization.

47257740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262558 (or 262553 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 47257740 is about 6874.4265215362. The cubic root of 47257740 is about 361.5410787613.

The spelling of 47257740 in words is "forty-seven million, two hundred fifty-seven thousand, seven hundred forty".