98611840 has 32 divisors (see below), whose sum is σ = 235745460. Its totient is φ = 39444480.

The previous prime is 98611819. The next prime is 98611841. The reversal of 98611840 is 4811689.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 98565184 + 46656 = 9928^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 98611840.

It is not an unprimeable number, because it can be changed into a prime (98611841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76401 + ... + 77680.

Almost surely, 2^98611840 is an apocalyptic number.

It is an amenable number.

98611840 is an abundant number, since it is smaller than the sum of its proper divisors (137133620).

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

98611840 is a wasteful number, since it uses less digits than its factorization.

98611840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154100 (or 154088 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 98611840 is about 9930.3494399744. The cubic root of 98611840 is about 462.0011119205.

The spelling of 98611840 in words is "ninety-eight million, six hundred eleven thousand, eight hundred forty".