77228011 has 8 divisors (see below), whose sum is σ = 88318944. Its totient is φ = 66151680.

The previous prime is 77228009. The next prime is 77228023. The reversal of 77228011 is 11082277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77228011 - 2¹ = 77228009 is a prime.

It is a super-2 number, since 2×77228011² = 11928331366032242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77228311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12411 + ... + 17563.

It is an arithmetic number, because the mean of its divisors is an integer number (11039868).

Almost surely, 2^77228011 is an apocalyptic number.

77228011 is a deficient number, since it is larger than the sum of its proper divisors (11090933).

77228011 is a wasteful number, since it uses less digits than its factorization.

77228011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7301.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 77228011 is about 8787.9469160891. The cubic root of 77228011 is about 425.8515999515.

The spelling of 77228011 in words is "seventy-seven million, two hundred twenty-eight thousand, eleven".