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2978868430 = 25314325197
BaseRepresentation
bin1011000110001101…
…1110110011001110
321200121021012021101
42301203132303032
522100042242210
61211331253314
7133550651416
oct26143366316
97617235241
102978868430
111299547a3a
126b174a23a
133861c6055
142038a5646
151267bca3a
hexb18decce

2978868430 has 48 divisors (see below), whose sum is σ = 5667732864. Its totient is φ = 1126077120.

The previous prime is 2978868427. The next prime is 2978868457. The reversal of 2978868430 is 348688792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 570592 + ... + 575788.

It is an arithmetic number, because the mean of its divisors is an integer number (118077768).

Almost surely, 22978868430 is an apocalyptic number.

2978868430 is a deficient number, since it is larger than the sum of its proper divisors (2688864434).

2978868430 is a wasteful number, since it uses less digits than its factorization.

2978868430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The square root of 2978868430 is about 54579.0108924667. The cubic root of 2978868430 is about 1438.8552550146.

The spelling of 2978868430 in words is "two billion, nine hundred seventy-eight million, eight hundred sixty-eight thousand, four hundred thirty".

Divisors: 1 2 5 10 31 43 62 86 155 215 310 430 1333 1849 2666 3698 5197 6665 9245 10394 13330 18490 25985 51970 57319 114638 161107 223471 286595 322214 446942 573190 805535 1117355 1611070 2234710 6927601 9609253 13855202 19218506 34638005 48046265 69276010 96092530 297886843 595773686 1489434215 2978868430