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2029988 = 22507497
BaseRepresentation
bin111101111100110100100
310211010121202
413233212210
51004424423
6111302032
723153222
oct7574644
93733552
102029988
111167184
1281a918
13560c9c
143abb12
152a1728
hex1ef9a4

2029988 has 6 divisors (see below), whose sum is σ = 3552486. Its totient is φ = 1014992.

The previous prime is 2029981. The next prime is 2029991. The reversal of 2029988 is 8899202.

It can be written as a sum of positive squares in only one way, i.e., 1982464 + 47524 = 1408^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (2029981) 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 as a sum of consecutive naturals, namely, 253745 + ... + 253752.

It is an arithmetic number, because the mean of its divisors is an integer number (592081).

22029988 is an apocalyptic number.

It is an amenable number.

2029988 is a deficient number, since it is larger than the sum of its proper divisors (1522498).

2029988 is a wasteful number, since it uses less digits than its factorization.

2029988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507501 (or 507499 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 2029988 is about 1424.7764736968. The cubic root of 2029988 is about 126.6186922046.

The spelling of 2029988 in words is "two million, twenty-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 4 507497 1014994 2029988