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61330494 = 2365915511
BaseRepresentation
bin1110100111110…
…1010000111110
311021101220121210
43221331100332
5111200033434
610030305250
71343205051
oct351752076
9137356553
1061330494
113168a565
1218658226
13c924744
148206a98
1555b6ee9
hex3a7d43e

61330494 has 16 divisors (see below), whose sum is σ = 122855040. Its totient is φ = 20411160.

The previous prime is 61330463. The next prime is 61330519. The reversal of 61330494 is 49403316.

It is a super-2 number, since 2×613304942 = 7522858988568072, 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 7 ways as a sum of consecutive naturals, for example, 3802 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (7678440).

Almost surely, 261330494 is an apocalyptic number.

61330494 is an abundant number, since it is smaller than the sum of its proper divisors (61524546).

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

61330494 is a wasteful number, since it uses less digits than its factorization.

61330494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16175.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 61330494 is about 7831.3788058042. The cubic root of 61330494 is about 394.3593610367.

The spelling of 61330494 in words is "sixty-one million, three hundred thirty thousand, four hundred ninety-four".

Divisors: 1 2 3 6 659 1318 1977 3954 15511 31022 46533 93066 10221749 20443498 30665247 61330494