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61348929 = 3193533049
BaseRepresentation
bin1110101000000…
…1110001000001
311021102211220120
43222001301001
5111201131204
610030530453
71343312565
oct352016101
9137384816
1061348929
11316a23a4
1218666a29
13c92cc55
14820d6a5
1555bc6d9
hex3a81c41

61348929 has 16 divisors (see below), whose sum is σ = 86376000. Its totient is φ = 38624256.

The previous prime is 61348913. The next prime is 61348961. The reversal of 61348929 is 92984316.

It is not a de Polignac number, because 61348929 - 24 = 61348913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61348979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18597 + ... + 21645.

It is an arithmetic number, because the mean of its divisors is an integer number (5398500).

Almost surely, 261348929 is an apocalyptic number.

It is an amenable number.

61348929 is a deficient number, since it is larger than the sum of its proper divisors (25027071).

61348929 is a wasteful number, since it uses less digits than its factorization.

61348929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424.

The product of its digits is 93312, while the sum is 42.

The square root of 61348929 is about 7832.5557131756. Note that the first 3 decimals coincide. The cubic root of 61348929 is about 394.3988698577.

The spelling of 61348929 in words is "sixty-one million, three hundred forty-eight thousand, nine hundred twenty-nine".

Divisors: 1 3 19 57 353 1059 3049 6707 9147 20121 57931 173793 1076297 3228891 20449643 61348929