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70239960 = 23345719163
BaseRepresentation
bin1000010111111…
…00011011011000
311220011120010000
410023330123120
5120440134320
610545253000
71512013140
oct413743330
9156146100
1070239960
113671535a
121b634160
1311723b0b
149485920
156276c90
hex42fc6d8

70239960 has 320 divisors, whose sum is σ = 285753600. Its totient is φ = 15116544.

The previous prime is 70239959. The next prime is 70239977. The reversal of 70239960 is 6993207.

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 79 ways as a sum of consecutive naturals, for example, 430839 + ... + 431001.

It is an arithmetic number, because the mean of its divisors is an integer number (892980).

Almost surely, 270239960 is an apocalyptic number.

70239960 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70239960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142876800).

70239960 is an abundant number, since it is smaller than the sum of its proper divisors (215513640).

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

70239960 is a wasteful number, since it uses less digits than its factorization.

70239960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 70239960 is about 8380.9283495326. The cubic root of 70239960 is about 412.5989184260.

The spelling of 70239960 in words is "seventy million, two hundred thirty-nine thousand, nine hundred sixty".