77421322 has 32 divisors (see below), whose sum is σ = 132991488. Its totient is φ = 33480000.

The previous prime is 77421317. The next prime is 77421389. The reversal of 77421322 is 22312477.

It is a super-2 number, since 2×77421322² = 11988122200455368, 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 15 ways as a sum of consecutive naturals, for example, 40672 + ... + 42532.

It is an arithmetic number, because the mean of its divisors is an integer number (4155984).

Almost surely, 2^77421322 is an apocalyptic number.

77421322 is a deficient number, since it is larger than the sum of its proper divisors (55570166).

77421322 is a wasteful number, since it uses less digits than its factorization.

77421322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its digits is 4704, while the sum is 28.

The square root of 77421322 is about 8798.9386860007. The cubic root of 77421322 is about 426.2066231519.

Adding to 77421322 its reverse (22312477), we get a palindrome (99733799).

The spelling of 77421322 in words is "seventy-seven million, four hundred twenty-one thousand, three hundred twenty-two".