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13020454 = 26510227
BaseRepresentation
bin110001101010…
…110100100110
3220111111201001
4301222310212
511313123304
61143023514
7215446336
oct61526446
926444631
1013020454
117393507
12443ab9a
13290b615
141a2d0c6
151222da4
hexc6ad26

13020454 has 4 divisors (see below), whose sum is σ = 19530684. Its totient is φ = 6510226.

The previous prime is 13020439. The next prime is 13020467. The reversal of 13020454 is 45402031.

13020454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45402031 = 211321487.

It is a super-2 number, since 2×130204542 = 339064444732232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255112 + ... + 3255115.

It is an arithmetic number, because the mean of its divisors is an integer number (4882671).

Almost surely, 213020454 is an apocalyptic number.

13020454 is a deficient number, since it is larger than the sum of its proper divisors (6510230).

13020454 is an equidigital number, since it uses as much as digits as its factorization.

13020454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510229.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13020454 is about 3608.3866200838. The cubic root of 13020454 is about 235.2567226135.

Adding to 13020454 its reverse (45402031), we get a palindrome (58422485).

The spelling of 13020454 in words is "thirteen million, twenty thousand, four hundred fifty-four".

Divisors: 1 2 6510227 13020454