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215103052 = 22371453399
BaseRepresentation
bin11001101001000…
…11011001001100
3112222202100220201
430310203121030
5420031244202
633202223244
75221226413
oct1464433114
9488670821
10215103052
1110046911a
1260054b24
1335744818
14207d447a
1513d3e387
hexcd2364c

215103052 has 12 divisors (see below), whose sum is σ = 386604400. Its totient is φ = 104644656.

The previous prime is 215103043. The next prime is 215103059. The reversal of 215103052 is 250301512.

It is not an unprimeable number, because it can be changed into a prime (215103059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726552 + ... + 726847.

Almost surely, 2215103052 is an apocalyptic number.

It is an amenable number.

215103052 is a deficient number, since it is larger than the sum of its proper divisors (171501348).

215103052 is a wasteful number, since it uses less digits than its factorization.

215103052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453440 (or 1453438 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 215103052 is about 14666.3919216691. The cubic root of 215103052 is about 599.1683403623.

Adding to 215103052 its reverse (250301512), we get a palindrome (465404564).

The spelling of 215103052 in words is "two hundred fifteen million, one hundred three thousand, fifty-two".

Divisors: 1 2 4 37 74 148 1453399 2906798 5813596 53775763 107551526 215103052