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90029148 = 22311739343
BaseRepresentation
bin1010101110110…
…11110001011100
320021101221202220
411113123301130
5141021413043
612533345340
72142143436
oct527336134
9207357686
1090029148
1146901260
1226198250
13158622b1
14bd57656
157d85483
hex55dbc5c

90029148 has 48 divisors (see below), whose sum is σ = 232329216. Its totient is φ = 26904960.

The previous prime is 90029141. The next prime is 90029167. The reversal of 90029148 is 84192009.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90029141) 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, 4965 + ... + 14307.

It is an arithmetic number, because the mean of its divisors is an integer number (4840192).

Almost surely, 290029148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90029148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116164608).

90029148 is an abundant number, since it is smaller than the sum of its proper divisors (142300068).

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

90029148 is a wasteful number, since it uses less digits than its factorization.

90029148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9434 (or 9432 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 90029148 is about 9488.3690906288. The cubic root of 90029148 is about 448.1888486878.

The spelling of 90029148 in words is "ninety million, twenty-nine thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 73 132 146 219 292 438 803 876 1606 2409 3212 4818 9343 9636 18686 28029 37372 56058 102773 112116 205546 308319 411092 616638 682039 1233276 1364078 2046117 2728156 4092234 7502429 8184468 15004858 22507287 30009716 45014574 90029148