92780240 has 80 divisors (see below), whose sum is σ = 252329088. Its totient is φ = 31062528.

The previous prime is 92780239. The next prime is 92780243. The reversal of 92780240 is 4208729.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 92780197 and 92780206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92780243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22154 + ... + 26006.

Almost surely, 2^92780240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 92780240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126164544).

92780240 is an abundant number, since it is smaller than the sum of its proper divisors (159548848).

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

92780240 is a wasteful number, since it uses less digits than its factorization.

92780240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916 (or 3910 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 92780240 is about 9632.2499967557. The cubic root of 92780240 is about 452.7083419380.

Adding to 92780240 its reverse (4208729), we get a palindrome (96988969).

The spelling of 92780240 in words is "ninety-two million, seven hundred eighty thousand, two hundred forty".