90619228 has 36 divisors (see below), whose sum is σ = 185659600. Its totient is φ = 38685696.

The previous prime is 90619223. The next prime is 90619237. The reversal of 90619228 is 82291609.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90619223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352476 + ... + 352732.

Almost surely, 2^90619228 is an apocalyptic number.

90619228 is a gapful number since it is divisible by the number (98) 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 90619228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92829800).

90619228 is an abundant number, since it is smaller than the sum of its proper divisors (95040372).

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

90619228 is an equidigital number, since it uses as much as digits as its factorization.

90619228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 90619228 is about 9519.4132172104. The cubic root of 90619228 is about 449.1659084337.

The spelling of 90619228 in words is "ninety million, six hundred nineteen thousand, two hundred twenty-eight".