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10204694949 = 315721666019
BaseRepresentation
bin10011000000011111…
…10100100110100101
3222100011221012210210
421200033310212211
5131344400214244
64404334010033
7510611322141
oct114017644645
928304835723
1010204694949
114367314399
121b89646919
13c68229747
146cb408221
153ead434b9
hex2603f49a5

10204694949 has 8 divisors (see below), whose sum is σ = 13692924640. Its totient is φ = 6759797616.

The previous prime is 10204694921. The next prime is 10204694953. The reversal of 10204694949 is 94949640201.

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

It is a de Polignac number, because none of the positive numbers 2k-10204694949 is a prime.

It is a super-2 number, since 2×102046949492 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10204694898 and 10204694907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204694909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10832539 + ... + 10833480.

It is an arithmetic number, because the mean of its divisors is an integer number (1711615580).

Almost surely, 210204694949 is an apocalyptic number.

It is an amenable number.

10204694949 is a deficient number, since it is larger than the sum of its proper divisors (3488229691).

10204694949 is a wasteful number, since it uses less digits than its factorization.

10204694949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666179.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 10204694949 in words is "ten billion, two hundred four million, six hundred ninety-four thousand, nine hundred forty-nine".

Divisors: 1 3 157 471 21666019 64998057 3401564983 10204694949