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1970049 = 3656683
BaseRepresentation
bin111100000111110000001
310201002101210
413200332001
51001020144
6110120333
722513404
oct7407601
93632353
101970049
111126144
127b00a9
1353c913
14393d3b
1528dab9
hex1e0f81

1970049 has 4 divisors (see below), whose sum is σ = 2626736. Its totient is φ = 1313364.

The previous prime is 1970039. The next prime is 1970071. The reversal of 1970049 is 9400791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9400791 = 33133597.

It is not a de Polignac number, because 1970049 - 27 = 1969921 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1969998 and 1970025.

It is not an unprimeable number, because it can be changed into a prime (1970029) 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, 328339 + ... + 328344.

It is an arithmetic number, because the mean of its divisors is an integer number (656684).

21970049 is an apocalyptic number.

It is an amenable number.

1970049 is a deficient number, since it is larger than the sum of its proper divisors (656687).

1970049 is an equidigital number, since it uses as much as digits as its factorization.

1970049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656686.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1970049 is about 1403.5843401805. The cubic root of 1970049 is about 125.3600074948.

The spelling of 1970049 in words is "one million, nine hundred seventy thousand, forty-nine".

Divisors: 1 3 656683 1970049