46643978 has 16 divisors (see below), whose sum is σ = 71971200. Its totient is φ = 22658400.

The previous prime is 46643963. The next prime is 46643981. The reversal of 46643978 is 87934664.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21173 + ... + 23271.

It is an arithmetic number, because the mean of its divisors is an integer number (4498200).

Almost surely, 2^46643978 is an apocalyptic number.

46643978 is a deficient number, since it is larger than the sum of its proper divisors (25327222).

46643978 is a wasteful number, since it uses less digits than its factorization.

46643978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413.

The product of its digits is 870912, while the sum is 47.

The square root of 46643978 is about 6829.6396683866. The cubic root of 46643978 is about 359.9690765619.

It can be divided in two parts, 466 and 43978, that added together give a palindrome (44444).

The spelling of 46643978 in words is "forty-six million, six hundred forty-three thousand, nine hundred seventy-eight".