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52698620 = 225131571291
BaseRepresentation
bin1100100100000…
…1110111111100
310200011100220202
43021001313330
5101442323440
65121303032
71206634202
oct311016774
9120140822
1052698620
1127824287
1215794a78
13abc1820
146ddb072
15495e615
hex3241dfc

52698620 has 48 divisors (see below), whose sum is σ = 120031968. Its totient is φ = 19319040.

The previous prime is 52698601. The next prime is 52698641. The reversal of 52698620 is 2689625.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40175 + ... + 41465.

It is an arithmetic number, because the mean of its divisors is an integer number (2500666).

Almost surely, 252698620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52698620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60015984).

52698620 is an abundant number, since it is smaller than the sum of its proper divisors (67333348).

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

52698620 is a wasteful number, since it uses less digits than its factorization.

52698620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 52698620 is about 7259.3815163552. The cubic root of 52698620 is about 374.9152282455.

The spelling of 52698620 in words is "fifty-two million, six hundred ninety-eight thousand, six hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 157 260 314 628 785 1291 1570 2041 2582 3140 4082 5164 6455 8164 10205 12910 16783 20410 25820 33566 40820 67132 83915 167830 202687 335660 405374 810748 1013435 2026870 2634931 4053740 5269862 10539724 13174655 26349310 52698620