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100380138 = 2317984119
BaseRepresentation
bin1011111101110…
…10110111101010
320222212211122220
411332322313222
5201144131023
613543254510
72326134315
oct576726752
9228784586
10100380138
11517310a1
122974a436
1317a47841
14d48d97c
158c2c3e3
hex5fbadea

100380138 has 16 divisors (see below), whose sum is σ = 212569920. Its totient is φ = 31491776.

The previous prime is 100380131. The next prime is 100380143. The reversal of 100380138 is 831083001.

It is not an unprimeable number, because it can be changed into a prime (100380131) 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, 491958 + ... + 492161.

It is an arithmetic number, because the mean of its divisors is an integer number (13285620).

Almost surely, 2100380138 is an apocalyptic number.

100380138 is an abundant number, since it is smaller than the sum of its proper divisors (112189782).

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

100380138 is a wasteful number, since it uses less digits than its factorization.

100380138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984141.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 100380138 is about 10018.9888711386. The cubic root of 100380138 is about 464.7462877717.

The spelling of 100380138 in words is "one hundred million, three hundred eighty thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 17 34 51 102 984119 1968238 2952357 5904714 16730023 33460046 50190069 100380138