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215029148 = 2261214447
BaseRepresentation
bin11001101000100…
…01010110011100
3112222121121112112
430310101112130
5420021413043
633200453152
75220501065
oct1464212634
9488547475
10215029148
11100418644
126001a1b8
1335719ca9
14207b556c
1513d27518
hexcd1159c

215029148 has 18 divisors (see below), whose sum is σ = 382597488. Its totient is φ = 105744720.

The previous prime is 215029147. The next prime is 215029159. The reversal of 215029148 is 841920512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215029147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7661 + ... + 22107.

It is an arithmetic number, because the mean of its divisors is an integer number (21255416).

Almost surely, 2215029148 is an apocalyptic number.

It is an amenable number.

215029148 is a deficient number, since it is larger than the sum of its proper divisors (167568340).

215029148 is a wasteful number, since it uses less digits than its factorization.

215029148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14573 (or 14510 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 215029148 is about 14663.8722034802. The cubic root of 215029148 is about 599.0997127768.

The spelling of 215029148 in words is "two hundred fifteen million, twenty-nine thousand, one hundred forty-eight".

Divisors: 1 2 4 61 122 244 3721 7442 14447 14884 28894 57788 881267 1762534 3525068 53757287 107514574 215029148