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23054949 = 34379751
BaseRepresentation
bin101011111110…
…0101001100101
31121101022110000
41113330221211
521400224244
62142051513
7366651411
oct127745145
947338400
1023054949
1112017585
127879b99
134a12aa8
1430c1d41
152056169
hex15fca65

23054949 has 20 divisors (see below), whose sum is σ = 34576960. Its totient is φ = 15309000.

The previous prime is 23054929. The next prime is 23054951. The reversal of 23054949 is 94945032.

It is a de Polignac number, because none of the positive numbers 2k-23054949 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23054909) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30324 + ... + 31074.

It is an arithmetic number, because the mean of its divisors is an integer number (1728848).

Almost surely, 223054949 is an apocalyptic number.

It is an amenable number.

23054949 is a deficient number, since it is larger than the sum of its proper divisors (11522011).

23054949 is an equidigital number, since it uses as much as digits as its factorization.

23054949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 23054949 is about 4801.5569349951. The cubic root of 23054949 is about 284.6129927184.

The spelling of 23054949 in words is "twenty-three million, fifty-four thousand, nine hundred forty-nine".

Divisors: 1 3 9 27 81 379 751 1137 2253 3411 6759 10233 20277 30699 60831 284629 853887 2561661 7684983 23054949