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90350374780 = 22520692183431
BaseRepresentation
bin101010000100101001…
…1010100111101111100
322122012200011120222001
41110021103110331330
52440014143443110
6105301214032044
76345652341241
oct1241123247574
9278180146861
1090350374780
1135354481926
12156161a8624
13869b5a9c33
1445316655c8
15253bedb63a
hex15094d4f7c

90350374780 has 24 divisors (see below), whose sum is σ = 189827578080. Its totient is φ = 36122665920.

The previous prime is 90350374769. The next prime is 90350374781. The reversal of 90350374780 is 8747305309.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90350374780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90350374781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050336 + ... + 1133095.

It is an arithmetic number, because the mean of its divisors is an integer number (7909482420).

Almost surely, 290350374780 is an apocalyptic number.

It is an amenable number.

90350374780 is an abundant number, since it is smaller than the sum of its proper divisors (99477203300).

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

90350374780 is a wasteful number, since it uses less digits than its factorization.

90350374780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185509 (or 2185507 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 46.

It can be divided in two parts, 90350 and 374780, that added together give a triangular number (465130 = T964).

The spelling of 90350374780 in words is "ninety billion, three hundred fifty million, three hundred seventy-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 2069 4138 8276 10345 20690 41380 2183431 4366862 8733724 10917155 21834310 43668620 4517518739 9035037478 18070074956 22587593695 45175187390 90350374780