Base | Representation |
---|---|
bin | 101100011100010… |
… | …011111111011100 |
3 | 1220222000101120002 |
4 | 230130103333130 |
5 | 3011334310140 |
6 | 201553113432 |
7 | 24322442360 |
oct | 5434237734 |
9 | 1828011502 |
10 | 745619420 |
11 | 3529789a7 |
12 | 189858878 |
13 | bb622930 |
14 | 710512a0 |
15 | 456d4415 |
hex | 2c713fdc |
745619420 has 96 divisors (see below), whose sum is σ = 1936636800. Its totient is φ = 234814464.
The previous prime is 745619419. The next prime is 745619431. The reversal of 745619420 is 24916547.
It is a super-2 number, since 2×7456194202 = 1111896638962272800, 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 in 31 ways as a sum of consecutive naturals, for example, 415886 + ... + 417674.
It is an arithmetic number, because the mean of its divisors is an integer number (20173300).
Almost surely, 2745619420 is an apocalyptic number.
745619420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 745619420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968318400).
745619420 is an abundant number, since it is smaller than the sum of its proper divisors (1191017380).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
745619420 is a wasteful number, since it uses less digits than its factorization.
745619420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2047 (or 2045 counting only the distinct ones).
The product of its (nonzero) digits is 60480, while the sum is 38.
The square root of 745619420 is about 27306.0326667936. The cubic root of 745619420 is about 906.7879430357.
The spelling of 745619420 in words is "seven hundred forty-five million, six hundred nineteen thousand, four hundred twenty".
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