99826740 has 144 divisors (see below), whose sum is σ = 335204688. Its totient is φ = 23887872.

The previous prime is 99826733. The next prime is 99826747. The reversal of 99826740 is 4762899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99826733) and next prime (99826747).

It can be written as a sum of positive squares in 8 ways, for example, as 1340964 + 98485776 = 1158^2 + 9924^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99826747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86004 + ... + 87156.

Almost surely, 2^99826740 is an apocalyptic number.

99826740 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99826740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167602344).

99826740 is an abundant number, since it is smaller than the sum of its proper divisors (235377948).

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

99826740 is a wasteful number, since it uses less digits than its factorization.

99826740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 99826740 is about 9991.3332443673. Note that the first 3 decimals coincide. The cubic root of 99826740 is about 463.8906611672.

The spelling of 99826740 in words is "ninety-nine million, eight hundred twenty-six thousand, seven hundred forty".