77273442 has 24 divisors (see below), whose sum is σ = 167596416. Its totient is φ = 25731576.

The previous prime is 77273431. The next prime is 77273459. The reversal of 77273442 is 24437277.

It is a junction number, because it is equal to n+sod(n) for n = 77273397 and 77273406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25323 + ... + 28209.

It is an arithmetic number, because the mean of its divisors is an integer number (6983184).

Almost surely, 2^77273442 is an apocalyptic number.

77273442 is an abundant number, since it is smaller than the sum of its proper divisors (90322974).

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

77273442 is a wasteful number, since it uses less digits than its factorization.

77273442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382 (or 4379 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 77273442 is about 8790.5313832555. The cubic root of 77273442 is about 425.9350889658.

The spelling of 77273442 in words is "seventy-seven million, two hundred seventy-three thousand, four hundred forty-two".