88380405 has 12 divisors (see below), whose sum is σ = 153192780. Its totient is φ = 47136192.

The previous prime is 88380403. The next prime is 88380463. The reversal of 88380405 is 50408388.

It can be written as a sum of positive squares in 2 ways, for example, as 30041361 + 58339044 = 5481^2 + 7638^2 .

It is not a de Polignac number, because 88380405 - 2¹ = 88380403 is a prime.

It is a super-2 number, since 2×88380405² = 15622191975928050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 88380405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88380403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981960 + ... + 982049.

It is an arithmetic number, because the mean of its divisors is an integer number (12766065).

Almost surely, 2^88380405 is an apocalyptic number.

It is an amenable number.

88380405 is a deficient number, since it is larger than the sum of its proper divisors (64812375).

88380405 is a wasteful number, since it uses less digits than its factorization.

88380405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964020 (or 1964017 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 88380405 is about 9401.0853096863. The cubic root of 88380405 is about 445.4360158574.

The spelling of 88380405 in words is "eighty-eight million, three hundred eighty thousand, four hundred five".