90681948 has 54 divisors (see below), whose sum is σ = 266653296. Its totient is φ = 25908624.

The previous prime is 90681947. The next prime is 90681949. The reversal of 90681948 is 84918609.

It is an interprime number because it is at equal distance from previous prime (90681947) and next prime (90681949).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90681947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23940 + ... + 27467.

It is an arithmetic number, because the mean of its divisors is an integer number (4938024).

Almost surely, 2^90681948 is an apocalyptic number.

90681948 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

90681948 is an abundant number, since it is smaller than the sum of its proper divisors (175971348).

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

90681948 is a wasteful number, since it uses less digits than its factorization.

90681948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51431 (or 51419 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 90681948 is about 9522.7069680842. The cubic root of 90681948 is about 449.2695111291.

The spelling of 90681948 in words is "ninety million, six hundred eighty-one thousand, nine hundred forty-eight".