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20120944 = 241257559
BaseRepresentation
bin100110011000…
…0010101110000
31101212020202011
41030300111300
520122332234
61555132304
7333011434
oct114602560
941766664
1020120944
11103a3188
1268a4094
1342264ac
14295a9c4
151b76b64
hex1330570

20120944 has 10 divisors (see below), whose sum is σ = 38984360. Its totient is φ = 10060464.

The previous prime is 20120939. The next prime is 20120957. The reversal of 20120944 is 44902102.

It is a super-2 number, since 2×201209442 = 809704774902272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628764 + ... + 628795.

It is an arithmetic number, because the mean of its divisors is an integer number (3898436).

Almost surely, 220120944 is an apocalyptic number.

It is an amenable number.

20120944 is a deficient number, since it is larger than the sum of its proper divisors (18863416).

20120944 is a wasteful number, since it uses less digits than its factorization.

20120944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257567 (or 1257561 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20120944 is about 4485.6375243660. The cubic root of 20120944 is about 271.9878166400.

The spelling of 20120944 in words is "twenty million, one hundred twenty thousand, nine hundred forty-four".

Divisors: 1 2 4 8 16 1257559 2515118 5030236 10060472 20120944