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2120972 = 227211359
BaseRepresentation
bin1000000101110100001100
310222202102112
420011310030
51020332342
6113243152
724012410
oct10056414
93882375
102120972
111219577
128634b8
13593519
143d2d40
152bd682
hex205d0c

2120972 has 24 divisors (see below), whose sum is σ = 4273920. Its totient is φ = 902160.

The previous prime is 2120957. The next prime is 2120977. The reversal of 2120972 is 2790212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5729 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (178080).

22120972 is an apocalyptic number.

It is an amenable number.

2120972 is an abundant number, since it is smaller than the sum of its proper divisors (2152948).

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

2120972 is a wasteful number, since it uses less digits than its factorization.

2120972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2120972 is about 1456.3557257758. The cubic root of 2120972 is about 128.4827958214.

The spelling of 2120972 in words is "two million, one hundred twenty thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 211 359 422 718 844 1436 1477 2513 2954 5026 5908 10052 75749 151498 302996 530243 1060486 2120972