90028213157850 has 192 divisors, whose sum is σ = 248856323604480. Its totient is φ = 21354835680000.

The previous prime is 90028213157849. The next prime is 90028213157851. The reversal of 90028213157850 is 5875131282009.

It is an interprime number because it is at equal distance from previous prime (90028213157849) and next prime (90028213157851).

It is a junction number, because it is equal to n+sod(n) for n = 90028213157793 and 90028213157802.

It is not an unprimeable number, because it can be changed into a prime (90028213157851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16882611 + ... + 21565689.

It is an arithmetic number, because the mean of its divisors is an integer number (1296126685440).

Almost surely, 2^{90028213157850} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90028213157850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124428161802240).

90028213157850 is an abundant number, since it is smaller than the sum of its proper divisors (158828110446630).

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

90028213157850 is a wasteful number, since it uses less digits than its factorization.

90028213157850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683357 (or 4683352 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 90028213157850 in words is "ninety trillion, twenty-eight billion, two hundred thirteen million, one hundred fifty-seven thousand, eight hundred fifty".