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1804470407990 = 25237879968899
BaseRepresentation
bin11010010000100010110…
…100010101001100110110
320101111122122102102100222
4122100202310111030312
5214031023411023430
63500543503134342
7244240313252345
oct32204264251466
96344578372328
101804470407990
116362a9559348
122518755a43b2
1310121245a633
14634a03b3b5c
1531e1224d9e5
hex1a422d15336

1804470407990 has 32 divisors (see below), whose sum is σ = 3393573062400. Its totient is φ = 689528736864.

The previous prime is 1804470407981. The next prime is 1804470408007. The reversal of 1804470407990 is 997040744081.

It is a super-2 number, since 2×18044704079902 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4803440 + ... + 5165459.

It is an arithmetic number, because the mean of its divisors is an integer number (106049158200).

Almost surely, 21804470407990 is an apocalyptic number.

1804470407990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1804470407990 is a deficient number, since it is larger than the sum of its proper divisors (1589102654410).

1804470407990 is a wasteful number, since it uses less digits than its factorization.

1804470407990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969716.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 1804470407990 in words is "one trillion, eight hundred four billion, four hundred seventy million, four hundred seven thousand, nine hundred ninety".

Divisors: 1 2 5 10 23 46 115 230 787 1574 3935 7870 18101 36202 90505 181010 9968899 19937798 49844495 99688990 229284677 458569354 1146423385 2292846770 7845523513 15691047026 39227617565 78455235130 180447040799 360894081598 902235203995 1804470407990