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14920091 = 31094799
BaseRepresentation
bin111000111010…
…100110011011
31001002000111222
4320322212123
512304420331
61251442255
7240550544
oct70724633
931060458
1014920091
11847075a
124bb638b
133125174
141da54cb
15149ab7b
hexe3a99b

14920091 has 4 divisors (see below), whose sum is σ = 14928000. Its totient is φ = 14912184.

The previous prime is 14920079. The next prime is 14920109. The reversal of 14920091 is 19002941.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19002941 = 37513593.

It is a cyclic number.

It is not a de Polignac number, because 14920091 - 26 = 14920027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14920091.

It is not an unprimeable number, because it can be changed into a prime (14920691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710 + ... + 5508.

It is an arithmetic number, because the mean of its divisors is an integer number (3732000).

Almost surely, 214920091 is an apocalyptic number.

14920091 is a deficient number, since it is larger than the sum of its proper divisors (7909).

14920091 is an equidigital number, since it uses as much as digits as its factorization.

14920091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 14920091 is about 3862.6533626511. The cubic root of 14920091 is about 246.1824884715.

The spelling of 14920091 in words is "fourteen million, nine hundred twenty thousand, ninety-one".

Divisors: 1 3109 4799 14920091