77013426 has 16 divisors (see below), whose sum is σ = 176030784. Its totient is φ = 22003824.

The previous prime is 77013413. The next prime is 77013427. The reversal of 77013426 is 62431077.

It is a junction number, because it is equal to n+sod(n) for n = 77013393 and 77013402.

It is not an unprimeable number, because it can be changed into a prime (77013427) 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, 916785 + ... + 916868.

It is an arithmetic number, because the mean of its divisors is an integer number (11001924).

Almost surely, 2^77013426 is an apocalyptic number.

77013426 is an abundant number, since it is smaller than the sum of its proper divisors (99017358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77013426 is a wasteful number, since it uses less digits than its factorization.

77013426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833665.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 77013426 is about 8775.7293713970. The cubic root of 77013426 is about 425.4568117030.

It can be divided in two parts, 770 and 13426, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 77013426 in words is "seventy-seven million, thirteen thousand, four hundred twenty-six".