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75142152 = 23324872143
BaseRepresentation
bin1000111101010…
…01010000001000
312020101121122200
410132221100020
5123214022102
611242320200
71601461221
oct436512010
9166347580
1075142152
1139463458
12211b9060
131274c217
149da0248
1568e451c
hex47a9408

75142152 has 48 divisors (see below), whose sum is σ = 204023040. Its totient is φ = 24984288.

The previous prime is 75142147. The next prime is 75142157. The reversal of 75142152 is 25124157.

It is an interprime number because it is at equal distance from previous prime (75142147) and next prime (75142157).

It is a super-2 number, since 2×751421522 = 11292686014382208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75142157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33993 + ... + 36135.

It is an arithmetic number, because the mean of its divisors is an integer number (4250480).

Almost surely, 275142152 is an apocalyptic number.

75142152 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

75142152 is an abundant number, since it is smaller than the sum of its proper divisors (128880888).

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

75142152 is a wasteful number, since it uses less digits than its factorization.

75142152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2635 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 75142152 is about 8668.4573021963. The cubic root of 75142152 is about 421.9825992541.

The spelling of 75142152 in words is "seventy-five million, one hundred forty-two thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 487 974 1461 1948 2143 2922 3896 4286 4383 5844 6429 8572 8766 11688 12858 17144 17532 19287 25716 35064 38574 51432 77148 154296 1043641 2087282 3130923 4174564 6261846 8349128 9392769 12523692 18785538 25047384 37571076 75142152