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1972030 = 25197203
BaseRepresentation
bin111100001011100111110
310201012010011
413201130332
51001101110
6110133434
722522234
oct7413476
93635104
101972030
111127685
127b127a
135407a8
14394954
1528e48a
hex1e173e

1972030 has 8 divisors (see below), whose sum is σ = 3549672. Its totient is φ = 788808.

The previous prime is 1972013. The next prime is 1972031. The reversal of 1972030 is 302791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1971992 and 1972010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972031) 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 in 3 ways as a sum of consecutive naturals, for example, 98592 + ... + 98611.

It is an arithmetic number, because the mean of its divisors is an integer number (443709).

21972030 is an apocalyptic number.

1972030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1972030 is a deficient number, since it is larger than the sum of its proper divisors (1577642).

1972030 is a wasteful number, since it uses less digits than its factorization.

1972030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197210.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1972030 is about 1404.2898561195. The cubic root of 1972030 is about 125.4020123691.

The spelling of 1972030 in words is "one million, nine hundred seventy-two thousand, thirty".

Divisors: 1 2 5 10 197203 394406 986015 1972030