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70174980 = 223251721971
BaseRepresentation
bin1000010111011…
…00100100000100
311220001020222100
410023230210010
5120431044410
610544032100
71511322531
oct413544404
9156036870
1070174980
1136680557
121b602630
1311700375
149469d88
1562628c0
hex42ec904

70174980 has 216 divisors, whose sum is σ = 241375680. Its totient is φ = 16450560.

The previous prime is 70174957. The next prime is 70174991. The reversal of 70174980 is 8947107.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 988345 + ... + 988415.

It is an arithmetic number, because the mean of its divisors is an integer number (1117480).

Almost surely, 270174980 is an apocalyptic number.

70174980 is the 6840-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70174980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120687840).

70174980 is an abundant number, since it is smaller than the sum of its proper divisors (171200700).

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

70174980 is a wasteful number, since it uses less digits than its factorization.

70174980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70174980 is about 8377.0507936863. The cubic root of 70174980 is about 412.4716454339.

The spelling of 70174980 in words is "seventy million, one hundred seventy-four thousand, nine hundred eighty".