47145890 has 32 divisors (see below), whose sum is σ = 93973824. Its totient is φ = 16885440.

The previous prime is 47145887. The next prime is 47145907. The reversal of 47145890 is 9854174.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4172 + ... + 10568.

It is an arithmetic number, because the mean of its divisors is an integer number (2936682).

Almost surely, 2^47145890 is an apocalyptic number.

47145890 is a deficient number, since it is larger than the sum of its proper divisors (46827934).

47145890 is a wasteful number, since it uses less digits than its factorization.

47145890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 47145890 is about 6866.2864781481. The cubic root of 47145890 is about 361.2556206546.

The spelling of 47145890 in words is "forty-seven million, one hundred forty-five thousand, eight hundred ninety".