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23977380 = 2235757089
BaseRepresentation
bin101101101110…
…1110110100100
31200010011210010
41123131312210
522114234010
62213530220
7410542620
oct133356644
950104703
1023977380
1112597619
128043970
134c768cb
143282180
152189620
hex16ddda4

23977380 has 48 divisors (see below), whose sum is σ = 76728960. Its totient is φ = 5480448.

The previous prime is 23977363. The next prime is 23977391. The reversal of 23977380 is 8377932.

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, 28125 + ... + 28964.

It is an arithmetic number, because the mean of its divisors is an integer number (1598520).

Almost surely, 223977380 is an apocalyptic number.

23977380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23977380 is an abundant number, since it is smaller than the sum of its proper divisors (52751580).

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

23977380 is a wasteful number, since it uses less digits than its factorization.

23977380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57108 (or 57106 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 23977380 is about 4896.6702972530. The cubic root of 23977380 is about 288.3592642284.

The spelling of 23977380 in words is "twenty-three million, nine hundred seventy-seven thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 57089 114178 171267 228356 285445 342534 399623 570890 685068 799246 856335 1141780 1198869 1598492 1712670 1998115 2397738 3425340 3996230 4795476 5994345 7992460 11988690 23977380