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29972408814 = 2321739625051
BaseRepresentation
bin11011111010011111…
…101010100111101110
32212100211101010101100
4123322133222213232
5442340414040224
621434044423530
72110513162035
oct337237524756
985324333340
1029972408814
11117907093a7
125985847ba6
132a9875465a
14164490571c
15ba64c8ac9
hex6fa7ea9ee

29972408814 has 24 divisors (see below), whose sum is σ = 65315602872. Its totient is φ = 9933051600.

The previous prime is 29972408771. The next prime is 29972408821. The reversal of 29972408814 is 41880427992.

29972408814 is a `hidden beast` number, since 2 + 99 + 72 + 408 + 81 + 4 = 666.

It is a super-2 number, since 2×299724088142 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4809412 + ... + 4815639.

It is an arithmetic number, because the mean of its divisors is an integer number (2721483453).

Almost surely, 229972408814 is an apocalyptic number.

29972408814 is an abundant number, since it is smaller than the sum of its proper divisors (35343194058).

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

29972408814 is a wasteful number, since it uses less digits than its factorization.

29972408814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625232 (or 9625229 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 29972408814 in words is "twenty-nine billion, nine hundred seventy-two million, four hundred eight thousand, eight hundred fourteen".

Divisors: 1 2 3 6 9 18 173 346 519 1038 1557 3114 9625051 19250102 28875153 57750306 86625459 173250918 1665133823 3330267646 4995401469 9990802938 14986204407 29972408814