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4900015 = 531101313
BaseRepresentation
bin10010101100010010101111
3100012221120001
4102230102233
52223300030
6253005131
756435521
oct22542257
910187501
104900015
1128474aa
1217837a7
131027423
14917a11
1566bcca
hex4ac4af

4900015 has 16 divisors (see below), whose sum is σ = 6149376. Its totient is φ = 3744000.

The previous prime is 4900003. The next prime is 4900031. The reversal of 4900015 is 5100094.

4900015 is a nontrivial binomial coefficient, being equal to C(3131, 2).

It is not a de Polignac number, because 4900015 - 27 = 4899887 is a prime.

It is a Duffinian number.

4900015 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4899965 and 4900001.

It is a congruent number.

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, 15499 + ... + 15811.

It is an arithmetic number, because the mean of its divisors is an integer number (384336).

Almost surely, 24900015 is an apocalyptic number.

4900015 is the 3130-th triangular number.

4900015 is the 1044-th centered nonagonal number.

4900015 is a deficient number, since it is larger than the sum of its proper divisors (1249361).

4900015 is a wasteful number, since it uses less digits than its factorization.

4900015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 4900015 is about 2213.5977502699. The cubic root of 4900015 is about 169.8500985403.

The spelling of 4900015 in words is "four million, nine hundred thousand, fifteen".

Divisors: 1 5 31 101 155 313 505 1565 3131 9703 15655 31613 48515 158065 980003 4900015