90616240 has 120 divisors (see below), whose sum is σ = 250327728. Its totient is φ = 30074880.

The previous prime is 90616231. The next prime is 90616243. The reversal of 90616240 is 4261609.

It is a super-2 number, since 2×90616240² = 16422605903475200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90616199 and 90616208.

It is not an unprimeable number, because it can be changed into a prime (90616243) 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 23 ways as a sum of consecutive naturals, for example, 1018116 + ... + 1018204.

Almost surely, 2^90616240 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 90616240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125163864).

90616240 is an abundant number, since it is smaller than the sum of its proper divisors (159711488).

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

90616240 is a wasteful number, since it uses less digits than its factorization.

90616240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 90616240 is about 9519.2562734701. The cubic root of 90616240 is about 449.1609715768.

Adding to 90616240 its reverse (4261609), we get a palindrome (94877849).

The spelling of 90616240 in words is "ninety million, six hundred sixteen thousand, two hundred forty".