45347978 has 16 divisors (see below), whose sum is σ = 75618816. Its totient is φ = 20254320.

The previous prime is 45347969. The next prime is 45347983. The reversal of 45347978 is 87974354.

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, 27326 + ... + 28937.

It is an arithmetic number, because the mean of its divisors is an integer number (4726176).

Almost surely, 2^45347978 is an apocalyptic number.

45347978 is a deficient number, since it is larger than the sum of its proper divisors (30270838).

45347978 is a wasteful number, since it uses less digits than its factorization.

45347978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56309.

The product of its digits is 846720, while the sum is 47.

The square root of 45347978 is about 6734.0907329795. The cubic root of 45347978 is about 356.6038074023.

The spelling of 45347978 in words is "forty-five million, three hundred forty-seven thousand, nine hundred seventy-eight".