77423190 has 64 divisors (see below), whose sum is σ = 203164416. Its totient is φ = 18767232.

The previous prime is 77423179. The next prime is 77423191. The reversal of 77423190 is 9132477.

It is a super-2 number, since 2×77423190² = 11988700699552200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77423191) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 24649 + ... + 27611.

It is an arithmetic number, because the mean of its divisors is an integer number (3174444).

Almost surely, 2^77423190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77423190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101582208).

77423190 is an abundant number, since it is smaller than the sum of its proper divisors (125741226).

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

77423190 is a wasteful number, since it uses less digits than its factorization.

77423190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 77423190 is about 8799.0448345261. The cubic root of 77423190 is about 426.2100509224.

The spelling of 77423190 in words is "seventy-seven million, four hundred twenty-three thousand, one hundred ninety".