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80315970 = 2357382457
BaseRepresentation
bin1001100100110…
…00011001000010
312121010110210120
410302120121002
5131030102340
611545241110
71663450230
oct462303102
9177113716
1080315970
1141377639
1222a93196
1313841157
14a949950
1570b74d0
hex4c98642

80315970 has 32 divisors (see below), whose sum is σ = 220295808. Its totient is φ = 18357888.

The previous prime is 80315957. The next prime is 80315971. The reversal of 80315970 is 7951308.

It is not an unprimeable number, because it can be changed into a prime (80315971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191019 + ... + 191438.

It is an arithmetic number, because the mean of its divisors is an integer number (6884244).

Almost surely, 280315970 is an apocalyptic number.

80315970 is an abundant number, since it is smaller than the sum of its proper divisors (139979838).

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

80315970 is a wasteful number, since it uses less digits than its factorization.

80315970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382474.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 80315970 is about 8961.9177635147. The cubic root of 80315970 is about 431.4534733998.

The spelling of 80315970 in words is "eighty million, three hundred fifteen thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 382457 764914 1147371 1912285 2294742 2677199 3824570 5354398 5736855 8031597 11473710 13385995 16063194 26771990 40157985 80315970