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61044490 = 2513241881
BaseRepresentation
bin1110100011011…
…1011100001010
311020212101022001
43220313130022
5111111410430
610020221214
71340604163
oct350673412
9136771261
1061044490
11315046a1
121853a80a
13c854500
14817076a
15555c3ca
hex3a3770a

61044490 has 48 divisors (see below), whose sum is σ = 122022936. Its totient is φ = 21964800.

The previous prime is 61044481. The next prime is 61044497. The reversal of 61044490 is 9444016.

It can be written as a sum of positive squares in 12 ways, for example, as 15468489 + 45576001 = 3933^2 + 6751^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61044497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68850 + ... + 69730.

Almost surely, 261044490 is an apocalyptic number.

61044490 is a deficient number, since it is larger than the sum of its proper divisors (60978446).

61044490 is a wasteful number, since it uses less digits than its factorization.

61044490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 61044490 is about 7813.0973371641. The cubic root of 61044490 is about 393.7453971075.

The spelling of 61044490 in words is "sixty-one million, forty-four thousand, four hundred ninety".

Divisors: 1 2 5 10 13 26 41 65 82 130 169 205 338 410 533 845 881 1066 1690 1762 2665 4405 5330 6929 8810 11453 13858 22906 34645 36121 57265 69290 72242 114530 148889 180605 297778 361210 469573 744445 939146 1488890 2347865 4695730 6104449 12208898 30522245 61044490