93391740 has 144 divisors (see below), whose sum is σ = 308756448. Its totient is φ = 22712832.

The previous prime is 93391733. The next prime is 93391741. The reversal of 93391740 is 4719339.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 93391695 and 93391704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93391741) 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 47 ways as a sum of consecutive naturals, for example, 250194 + ... + 250566.

It is an arithmetic number, because the mean of its divisors is an integer number (2144142).

Almost surely, 2^93391740 is an apocalyptic number.

93391740 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 93391740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154378224).

93391740 is an abundant number, since it is smaller than the sum of its proper divisors (215364708).

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

93391740 is a wasteful number, since it uses less digits than its factorization.

93391740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 93391740 is about 9663.9401902123. The cubic root of 93391740 is about 453.7007414141.

The spelling of 93391740 in words is "ninety-three million, three hundred ninety-one thousand, seven hundred forty".