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90452398080 = 21235112233
BaseRepresentation
bin101010000111101100…
…0100001000000000000
322122110210010220121210
41110033120201000000
52440221303214310
6105315300450120
76351331461252
oct1241730410000
9278423126553
1090452398080
11353a7025500
12156443a9940
1386b677b655
144541021cd2
152545e40820
hex150f621000

90452398080 has 624 divisors, whose sum is σ = 332572947840. Its totient is φ = 20974469120.

The previous prime is 90452398037. The next prime is 90452398081. The reversal of 90452398080 is 8089325409.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (90452398081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3932712949 + ... + 3932712971.

Almost surely, 290452398080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90452398080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166286473920).

90452398080 is an abundant number, since it is smaller than the sum of its proper divisors (242120549760).

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

90452398080 is an equidigital number, since it uses as much as digits as its factorization.

90452398080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 90452398080 in words is "ninety billion, four hundred fifty-two million, three hundred ninety-eight thousand, eighty".