90060840 has 48 divisors (see below), whose sum is σ = 292698900. Its totient is φ = 24016128.

The previous prime is 90060829. The next prime is 90060851. The reversal of 90060840 is 4806009.

It is an interprime number because it is at equal distance from previous prime (90060829) and next prime (90060851).

It can be written as a sum of positive squares in 2 ways, for example, as 82410084 + 7650756 = 9078^2 + 2766^2 .

It is a super-2 number, since 2×90060840² = 16221909803011200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124725 + ... + 125444.

Almost surely, 2^90060840 is an apocalyptic number.

90060840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90060840 is an abundant number, since it is smaller than the sum of its proper divisors (202638060).

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

90060840 is a wasteful number, since it uses less digits than its factorization.

90060840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250186 (or 250179 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 90060840 is about 9490.0389883288. The cubic root of 90060840 is about 448.2414328968.

Adding to 90060840 its reverse (4806009), we get a palindrome (94866849).

The spelling of 90060840 in words is "ninety million, sixty thousand, eight hundred forty".