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30149701 = 314720693
BaseRepresentation
bin111001100000…
…0110001000101
32002201202121121
41303000301011
530204242301
62554113541
7514161001
oct163006105
962652547
1030149701
1116022a0a
12a11b8b1
13632817a
14400b701
1529a83a1
hex1cc0c45

30149701 has 8 divisors (see below), whose sum is σ = 31785984. Its totient is φ = 28554960.

The previous prime is 30149699. The next prime is 30149723. The reversal of 30149701 is 10794103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30149701 - 21 = 30149699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30149731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8890 + ... + 11803.

It is an arithmetic number, because the mean of its divisors is an integer number (3973248).

Almost surely, 230149701 is an apocalyptic number.

30149701 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30149701 is a deficient number, since it is larger than the sum of its proper divisors (1636283).

30149701 is a wasteful number, since it uses less digits than its factorization.

30149701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20771.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 30149701 is about 5490.8743383909. The cubic root of 30149701 is about 311.2392330808.

The spelling of 30149701 in words is "thirty million, one hundred forty-nine thousand, seven hundred one".

Divisors: 1 31 47 1457 20693 641483 972571 30149701