47213770 has 8 divisors (see below), whose sum is σ = 84984804. Its totient is φ = 18885504.

The previous prime is 47213731. The next prime is 47213791. The reversal of 47213770 is 7731274.

It can be written as a sum of positive squares in 2 ways, for example, as 47155689 + 58081 = 6867^2 + 241^2 .

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

It is a super-2 number, since 2×47213770² = 4458280155225800, which contains 22 as substring.

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, 2360679 + ... + 2360698.

Almost surely, 2^47213770 is an apocalyptic number.

47213770 is a deficient number, since it is larger than the sum of its proper divisors (37771034).

47213770 is a wasteful number, since it uses less digits than its factorization.

47213770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721384.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 47213770 is about 6871.2276923414. The cubic root of 47213770 is about 361.4289144604.

The spelling of 47213770 in words is "forty-seven million, two hundred thirteen thousand, seven hundred seventy".