47081830 has 8 divisors (see below), whose sum is σ = 84747312. Its totient is φ = 18832728.

The previous prime is 47081803. The next prime is 47081849. The reversal of 47081830 is 3818074.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×47081830² = 4433397432297800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47081792 and 47081801.

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, 2354082 + ... + 2354101.

It is an arithmetic number, because the mean of its divisors is an integer number (10593414).

Almost surely, 2^47081830 is an apocalyptic number.

47081830 is a deficient number, since it is larger than the sum of its proper divisors (37665482).

47081830 is a wasteful number, since it uses less digits than its factorization.

47081830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708190.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 47081830 is about 6861.6200710911. The cubic root of 47081830 is about 361.0919264671.

The spelling of 47081830 in words is "forty-seven million, eighty-one thousand, eight hundred thirty".