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38619672090 = 2351287322403
BaseRepresentation
bin100011111101111010…
…010110111000011010
310200200110201121120120
4203331322112320122
51113043114001330
625424105334110
72535013540116
oct437572267032
9120613647516
1038619672090
111541888627a
127599797336
133846100b9c
141c2513a746
15101072ac10
hex8fde96e1a

38619672090 has 16 divisors (see below), whose sum is σ = 92687213088. Its totient is φ = 10298579216.

The previous prime is 38619672083. The next prime is 38619672101. The reversal of 38619672090 is 9027691683.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643661172 + ... + 643661231.

It is an arithmetic number, because the mean of its divisors is an integer number (5792950818).

Almost surely, 238619672090 is an apocalyptic number.

38619672090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38619672090 is an abundant number, since it is smaller than the sum of its proper divisors (54067540998).

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

38619672090 is a wasteful number, since it uses less digits than its factorization.

38619672090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287322413.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 38619672090 in words is "thirty-eight billion, six hundred nineteen million, six hundred seventy-two thousand, ninety".

Divisors: 1 2 3 5 6 10 15 30 1287322403 2574644806 3861967209 6436612015 7723934418 12873224030 19309836045 38619672090