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99996980 = 2254999849
BaseRepresentation
bin1011111010111…
…01010100110100
320222011101001212
411331131110310
5201044400410
613531140552
72322650246
oct575352464
9228141055
1099996980
115149a236
12295a4758
1317942315
14d3d0096
158ba3b05
hex5f5d534

99996980 has 12 divisors (see below), whose sum is σ = 209993700. Its totient is φ = 39998784.

The previous prime is 99996971. The next prime is 99996983. The reversal of 99996980 is 8969999.

It can be written as a sum of positive squares in 2 ways, for example, as 77510416 + 22486564 = 8804^2 + 4742^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99996983) 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, 2499905 + ... + 2499944.

It is an arithmetic number, because the mean of its divisors is an integer number (17499475).

Almost surely, 299996980 is an apocalyptic number.

It is an amenable number.

99996980 is an abundant number, since it is smaller than the sum of its proper divisors (109996720).

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

99996980 is a wasteful number, since it uses less digits than its factorization.

99996980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999858 (or 4999856 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 59.

The square root of 99996980 is about 9999.8489988599. The cubic root of 99996980 is about 464.1542107815.

It can be divided in two parts, 999 and 96980, that added together give a palindrome (97979).

The spelling of 99996980 in words is "ninety-nine million, nine hundred ninety-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 4999849 9999698 19999396 24999245 49998490 99996980