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1974972 = 223164581
BaseRepresentation
bin111100010001010111100
310201100011010
413202022330
51001144342
6110155220
722533636
oct7421274
93640133
101974972
11112990a
127b2b10
13541c2c
14395a56
1529029c
hex1e22bc

1974972 has 12 divisors (see below), whose sum is σ = 4608296. Its totient is φ = 658320.

The previous prime is 1974967. The next prime is 1974983. The reversal of 1974972 is 2794791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1974972.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82279 + ... + 82302.

21974972 is an apocalyptic number.

1974972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1974972 is an abundant number, since it is smaller than the sum of its proper divisors (2633324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1974972 is a wasteful number, since it uses less digits than its factorization.

1974972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164588 (or 164586 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The square root of 1974972 is about 1405.3369702673. The cubic root of 1974972 is about 125.4643422874.

The spelling of 1974972 in words is "one million, nine hundred seventy-four thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 164581 329162 493743 658324 987486 1974972