8472778 has 16 divisors (see below), whose sum is σ = 13273704. Its totient is φ = 4052160.

The previous prime is 8472767. The next prime is 8472787. The reversal of 8472778 is 8772748.

It can be written as a sum of positive squares in 4 ways, for example, as 7166329 + 1306449 = 2677^2 + 1143^2 .

It is a super-3 number, since 3×8472778³ (a number of 22 digits) contains 333 as substring.

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, 3576 + ... + 5452.

Almost surely, 2^8472778 is an apocalyptic number.

8472778 is a deficient number, since it is larger than the sum of its proper divisors (4800926).

8472778 is a wasteful number, since it uses less digits than its factorization.

8472778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977.

The product of its digits is 175616, while the sum is 43.

The square root of 8472778 is about 2910.8036690921. The cubic root of 8472778 is about 203.8646577611.

The spelling of 8472778 in words is "eight million, four hundred seventy-two thousand, seven hundred seventy-eight".