47326978 has 4 divisors (see below), whose sum is σ = 70990470. Its totient is φ = 23663488.

The previous prime is 47326957. The next prime is 47327009. The reversal of 47326978 is 87962374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45603009 + 1723969 = 6753^2 + 1313^2 .

It is a super-2 number, since 2×47326978² = 4479685693224968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11831743 + ... + 11831746.

Almost surely, 2^47326978 is an apocalyptic number.

47326978 is a deficient number, since it is larger than the sum of its proper divisors (23663492).

47326978 is a wasteful number, since it uses less digits than its factorization.

47326978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23663491.

The product of its digits is 508032, while the sum is 46.

The square root of 47326978 is about 6879.4605893195. The cubic root of 47326978 is about 361.7175589601.

The spelling of 47326978 in words is "forty-seven million, three hundred twenty-six thousand, nine hundred seventy-eight".