98615490 has 64 divisors (see below), whose sum is σ = 249080832. Its totient is φ = 24939200.

The previous prime is 98615483. The next prime is 98615507. The reversal of 98615490 is 9451689.

98615490 = T₂₀₇₁ + T₂₀₇₂ + ... + T₂₁₁₅.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89845 + ... + 90935.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888).

Almost surely, 2^98615490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98615490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124540416).

98615490 is an abundant number, since it is smaller than the sum of its proper divisors (150465342).

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

98615490 is a wasteful number, since it uses less digits than its factorization.

98615490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 98615490 is about 9930.5332183121. The cubic root of 98615490 is about 462.0068119908.

It can be divided in two parts, 9861 and 5490, that added together give a palindrome (15351).

The spelling of 98615490 in words is "ninety-eight million, six hundred fifteen thousand, four hundred ninety".