84526778 has 16 divisors (see below), whose sum is σ = 146945664. Its totient is φ = 35715120.

The previous prime is 84526769. The next prime is 84526807. The reversal of 84526778 is 87762548.

It is a super-2 number, since 2×84526778² = 14289552398122568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41525 + ... + 43512.

It is an arithmetic number, because the mean of its divisors is an integer number (9184104).

Almost surely, 2^84526778 is an apocalyptic number.

84526778 is a deficient number, since it is larger than the sum of its proper divisors (62418886).

84526778 is a wasteful number, since it uses less digits than its factorization.

84526778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85117.

The product of its digits is 752640, while the sum is 47.

The square root of 84526778 is about 9193.8445712335. The cubic root of 84526778 is about 438.8654967136.

The spelling of 84526778 in words is "eighty-four million, five hundred twenty-six thousand, seven hundred seventy-eight".