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15004972 = 223751243
BaseRepresentation
bin111001001111…
…010100101100
31001020022221201
4321033110230
512320124342
61253335244
7241353163
oct71172454
931208851
1015004972
118519504
125037524
1331549a8
141dc83da
1514b5db7
hexe4f52c

15004972 has 6 divisors (see below), whose sum is σ = 26258708. Its totient is φ = 7502484.

The previous prime is 15004949. The next prime is 15004973. The reversal of 15004972 is 27940051.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15004972.

It is not an unprimeable number, because it can be changed into a prime (15004973) 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 as a sum of consecutive naturals, namely, 1875618 + ... + 1875625.

Almost surely, 215004972 is an apocalyptic number.

It is an amenable number.

15004972 is a deficient number, since it is larger than the sum of its proper divisors (11253736).

15004972 is a wasteful number, since it uses less digits than its factorization.

15004972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751247 (or 3751245 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 15004972 is about 3873.6251754655. The cubic root of 15004972 is about 246.6484533261.

The spelling of 15004972 in words is "fifteen million, four thousand, nine hundred seventy-two".

Divisors: 1 2 4 3751243 7502486 15004972