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129930794 = 279280771
BaseRepresentation
bin1111011111010…
…01011000101010
3100001111011112122
413233221120222
5231230241134
620520511242
73135251660
oct757513052
9301434478
10129930794
1167384a24
123761b522
1320bc3136
1413382c30
15b61802e
hex7be962a

129930794 has 8 divisors (see below), whose sum is σ = 222738528. Its totient is φ = 55684620.

The previous prime is 129930767. The next prime is 129930799. The reversal of 129930794 is 497039921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1299307942 = 33764022458940872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129930799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640372 + ... + 4640399.

It is an arithmetic number, because the mean of its divisors is an integer number (27842316).

Almost surely, 2129930794 is an apocalyptic number.

129930794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129930794 is a deficient number, since it is larger than the sum of its proper divisors (92807734).

129930794 is an equidigital number, since it uses as much as digits as its factorization.

129930794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280780.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 129930794 is about 11398.7189631116. The cubic root of 129930794 is about 506.4897927361.

The spelling of 129930794 in words is "one hundred twenty-nine million, nine hundred thirty thousand, seven hundred ninety-four".

Divisors: 1 2 7 14 9280771 18561542 64965397 129930794